HP Pavilion G6 vs Lenovo G575 vs U510: Which One Should You Buy Today?
Old laptops are not necessarily useless laptops.
In 2026, machines from the early 2010s can still be valuable for retro computing, legacy software, basic office work, Linux experiments, repair training and second-hand refurbishment.
The important question is no longer simply:
“How fast was this laptop when it was new?”
Instead, we should ask:
“How much useful life can this laptop still provide after refurbishment?”
That changes the comparison between the HP Pavilion G6, Lenovo IdeaPad G575 and Lenovo IdeaPad U510.
These three notebooks represent three different approaches to laptop design.
The Pavilion G6 is a traditional, expandable home laptop.
The IdeaPad G575 is an inexpensive entry-level machine built around simplicity.
The IdeaPad U510 represents the transition toward thinner and more power-efficient notebooks.
There is another component that deserves attention when restoring these machines: the AC adapter.
A failing charger can make a perfectly functional laptop appear to have a charging or battery problem. For equipment that specifically requires 19V, 3.42A and 65W with the correct connector, a 65W Laptop Charger such as the Delta ADP-65JH-HB can be an important part of the refurbishment process.
However, compatibility must always be checked against the exact laptop specification.
Quick Verdict
If we evaluate these three laptops specifically as old laptop collectibles, second-hand office computers and refurbishment projects, the overall ranking looks like this:
| Category | HP Pavilion G6 | Lenovo IdeaPad G575 | Lenovo IdeaPad U510 |
|---|---|---|---|
| Performance potential | ★★★★ | ★★ | ★★★ |
| Portability | ★★ | ★★ | ★★★★★ |
| Build quality | ★★★ | ★★★ | ★★★★ |
| Display | ★★★ | ★★★ | ★★★ |
| Upgradeability | ★★★★ | ★★★★ | ★★ |
| Battery efficiency | ★★★ | ★★★ | ★★★★ |
| Gaming | ★★★★ | ★★ | ★★★ |
| Repairability | ★★★★ | ★★★★ | ★★★ |
| Second-hand value | ★★★★ | ★★★ | ★★★★ |
| Overall | 8.3/10 | 7.2/10 | 8.5/10 |
Best for performance: HP Pavilion G6
A high-spec G6 with a Core i5/i7 processor, sufficient DDR3 memory and discrete graphics is the strongest candidate for refurbishment.
Best for simple repairs: Lenovo IdeaPad G575
The G575 is attractive when purchased very cheaply and used for basic computing, legacy software or repair practice.
Best for portability and efficiency: Lenovo IdeaPad U510
The U510 has the most modern design of the three, with a low-voltage Core i5 processor, thinner chassis and aluminum construction.
HP Pavilion G6: The Most Flexible Old Laptop
The first thing to understand about the Pavilion G6 is that it is not one specific configuration.
Pavilion G6 is a product family.
This distinction is extremely important when shopping for a used machine.
Depending on the generation and market, G6 systems could be equipped with Intel Pentium, Core i3, Core i5 and Core i7 processors, while AMD-based configurations were also available.
Some higher-end versions could feature hardware such as the Intel Core i7-3632QM and AMD Radeon HD 7670M with 2GB of dedicated graphics memory.
Therefore, two laptops carrying the “Pavilion G6” name can have dramatically different performance.
When evaluating a used G6, the exact CPU, GPU, memory configuration and motherboard should always be checked.
Pavilion G6 Hardware and Upgrade Potential
A typical Pavilion G6 configuration may include:
- 15.6-inch display
- 1366 × 768 resolution
- DDR3 memory
- 2.5-inch SATA hard drive
- DVD optical drive
- HDMI
- VGA
- USB
- Ethernet
- Removable battery
- 65W or 90W AC adapter depending on configuration
This traditional architecture is precisely what makes the G6 attractive today.
It was designed before manufacturers began aggressively integrating every component onto the motherboard.
Consequently, many important components remain serviceable.
For refurbishment, this is a major advantage.
Why the Pavilion G6 Is Excellent for Refurbishment
Imagine finding an old G6 with:
Core i5 + 4GB RAM + 500GB HDD
The machine may feel extremely slow today.
But the problem is not necessarily the entire computer.
The mechanical hard drive is often the biggest obstacle to responsiveness.
Replacing the HDD with a SATA SSD can produce a dramatic improvement.
A refurbished G6 with:
SSD + 8GB DDR3 + clean cooling system
can still be useful for:
- Office work
- Web browsing
- Lightweight programming
- Linux
- Legacy applications
- File management
- Retro gaming
- Repair testing
This is where the G6 becomes more interesting than its age suggests.
Pavilion G6 Display: Its Biggest Weakness
The traditional design has another side effect.
The G6 is relatively heavy.
Some 15.6-inch configurations weigh around 2.5kg.
That is acceptable for a home computer but not ideal for modern commuting.
The display is also clearly from another era.
Typical configurations use:
15.6-inch / 1366 × 768
with relatively modest brightness.
For documents and basic office work, it is adequate.
For professional photography, color grading or outdoor work, it is not impressive.
This is one area where refurbishment has limited economic value.
Replacing a hard drive is straightforward.
Replacing the display with a modern high-resolution panel can require checking:
- Display cable
- Connector type
- BIOS compatibility
- Mounting points
- Panel thickness
- Power requirements
Therefore, the SSD should normally receive priority over a display upgrade.
Lenovo IdeaPad G575: The Budget Refurbishment Option
The Lenovo IdeaPad G575 follows a much more conservative philosophy.
It was designed as an affordable home notebook rather than a performance machine.
A representative configuration could use:
- AMD E-450 processor
- Radeon HD 6320 graphics
- 2GB or 4GB DDR3
- 320GB to 750GB HDD
- 15.6-inch display
- 1366 × 768 resolution
- DVD drive
- Windows 7
At the time, this was reasonable entry-level hardware.
In 2026, however, the AMD E-450 is the main limitation.
AMD E-450 Performance in 2026
The E-450 was designed for low power consumption and inexpensive notebooks.
Its strengths were:
- Low power consumption
- Low heat output
- Low cost
Its weakness was CPU performance.
An original configuration with:
E-450 + 2GB/4GB RAM + HDD
is not suitable for demanding modern workloads.
Modern websites can be surprisingly CPU-intensive.
Multiple browser tabs can quickly consume memory and CPU resources.
Video conferencing and large Office documents can also expose the limitations of the platform.
Therefore, the G575 should not be purchased as a modern performance laptop.
Its better roles are:
- Legacy software machine
- Retro computer
- Linux experiment
- Basic document computer
- Repair training platform
- Windows 7-era collector’s machine
Why the G575 Is Still Interesting to Repair Technicians
The G575 has an advantage that modern thin laptops often lack:
physical space.
The large traditional chassis provides relatively generous access to internal components.
Basic refurbishment work can include:
- Cleaning the cooling system.
- Replacing thermal compound.
- Installing an SSD.
- Increasing memory.
- Replacing the battery.
- Inspecting the DC jack.
- Checking the AC adapter.
- Installing a lightweight operating system.
For someone learning laptop repair, this type of machine can be more useful than a modern ultrathin notebook.
Important G575 Power Adapter Compatibility Warning
The power system deserves special attention.
Some G575 specifications identify a 65W power requirement around:
20V / 3.25A
The Delta ADP-65JH-HB, however, is a different specification:
19V / 3.42A / 65W
This illustrates an important rule when buying a Replacement Power Adapter:
The wattage alone does not determine compatibility.
Both adapters may be rated at approximately 65W, but their output voltages are different.
Therefore, do not assume that a 65W Delta adapter can automatically replace a 65W Lenovo adapter.
Always check the exact laptop model and its electrical requirements.
Lenovo IdeaPad U510: The Most Interesting Design
The U510 is fundamentally different from the G575.
It represents Lenovo’s move toward thinner notebooks.
A representative configuration included:
- Intel Core i5-3317U
- 4GB DDR3
- 500GB HDD
- NVIDIA GeForce G625M
- 15.6-inch display
- Approximately 21mm thickness
- Approximately 2.2kg weight
- Aluminum exterior
The U510 therefore feels more modern than its age would suggest.
It is not a contemporary ultrabook, but it clearly belongs to the transitional generation between traditional thick notebooks and modern thin laptops.
Core i5-3317U: Efficiency Matters
The U510’s Core i5-3317U is a low-voltage processor.
It has:
2 cores / 4 threads
with Turbo Boost reaching approximately 2.6GHz.
Compared with the AMD E-450 in the G575, the architectural difference is substantial.
This means that the U510 is much better suited to everyday tasks such as:
- Web browsing
- Office applications
- Multitasking
- File compression
- Programming
- Lightweight Linux
An old U510 with:
8GB RAM + SSD
can still make a surprisingly pleasant basic workstation.
U510 Battery Efficiency
The U510’s low-voltage architecture also helps reduce power consumption.
Historical testing showed battery results in the neighborhood of:
- 7 hours 48 minutes idle
- 4 hours 47 minutes Wi-Fi
- 4 hours 04 minutes DVD playback
- 2 hours 25 minutes under heavy load
These numbers were respectable for a 15.6-inch notebook of its generation.
Today, battery health obviously depends heavily on the age and condition of the particular unit.
An original battery that has spent more than a decade cycling may have lost substantial capacity.
That is why battery condition should always be checked when purchasing a used U510.
U510 vs G575: Which Is Faster?
The answer is straightforward.
The U510’s Core i5-3317U is considerably more capable than the AMD E-450.
Both processors are dual-core designs, but the Intel chip provides four threads and a much stronger architecture.
Consequently:
U510 > G575
for general computing.
An SSD improves both machines.
But an SSD cannot eliminate the CPU limitations of the E-450.
U510 vs Pavilion G6: A More Complicated Battle
The comparison becomes more interesting when the Pavilion G6 enters the picture.
A low-end G6 configuration may not be dramatically better than the U510 in everyday work.
For example:
Pavilion G6 + Pentium processor
versus:
U510 + Core i5-3317U
The U510 can be more attractive because of its CPU efficiency, lower power consumption and thinner chassis.
But a high-end G6 is a different story.
A configuration with:
Core i7-3632QM + Radeon HD 7670M 2GB
can deliver substantially more raw performance.
Therefore, there is no single answer for every G6.
The practical ranking is:
High-spec G6 > U510 > typical G575
for performance.
Gaming Performance
None of these laptops should be considered a modern gaming computer.
However, their gaming capabilities are different.
G575
The Radeon HD 6320 is primarily suitable for older and lightweight games.
It is not designed for modern 3D gaming.
U510
The GeForce G625M provides more graphics capability.
It can be useful for older games and relatively lightweight 3D titles.
High-Spec G6
A G6 equipped with Radeon HD 7670M is the strongest gaming platform of the three.
For older games, this configuration can still be surprisingly useful.
Therefore:
High-spec G6 > U510 > G575
for gaming.
Display Comparison
All three machines show their age in the display department.
| Feature | Pavilion G6 | G575 | U510 |
|---|---|---|---|
| Screen size | 15.6″ | 15.6″ | 15.6″ |
| Typical resolution | 1366 × 768 | 1366 × 768 | 1366 × 768 |
| IPS | No | No | No |
| Color quality | Average | Average | Average |
| Outdoor visibility | Weak | Weak | Weak |
| Office work | Acceptable | Acceptable | Acceptable |
If you are buying one of these machines for refurbishment, do not expect a modern visual experience.
The displays are functional rather than impressive.
Keyboard and Office Productivity
The G6 and G575 both use traditional full-size notebook keyboards.
That makes them useful for:
- Excel
- Data entry
- Word processing
- Long documents
- Basic office applications
The U510 uses Lenovo’s chiclet-style keyboard.
Visually, it looks more modern.
However, the thinner chassis means that its keyboard feel is not necessarily superior to the thicker G6 and G575.
For stationary office use, the G6 and G575 can actually be quite practical.
Build Quality: U510 Takes the Lead
If we evaluate only chassis quality, the ranking is clear:
U510 > G6 > G575
The U510’s aluminum exterior gives it a more premium appearance.
The G6 and G575 rely more heavily on conventional plastic construction.
This makes the U510 particularly attractive to collectors.
It represents an interesting stage in laptop design history when manufacturers were trying to make large-screen laptops thinner without completely abandoning traditional components.
Repairability: G6 and G575 Win
The ranking reverses when repairability becomes the priority.
A reasonable ranking is:
G6 > G575 > U510
The G6 and G575 benefit from their larger traditional chassis.
There is more room for:
- Storage
- Memory
- Cooling components
- Optical drives
- Replaceable batteries
The U510’s thin design creates more compact internal architecture.
That does not mean the U510 cannot be repaired.
It simply means that disassembly and component replacement generally require more care.
What Should You Replace First?
If you buy one of these laptops for refurbishment, prioritize the work carefully.
1. Replace the HDD with an SSD
This is normally the most noticeable upgrade.
2. Increase RAM
8GB is a useful target where supported.
3. Clean the cooling system
Remove dust from the fan and heatsink.
4. Replace degraded thermal compound
This can help stabilize an aging machine.
5. Check the battery
A battery that has lost most of its capacity severely reduces portability.
6. Inspect the charger
A damaged adapter can cause charging problems and make battery diagnosis misleading.
When the laptop requires the corresponding electrical specifications, a Laptop Power Adapter can be an important replacement component.
Why the AC Adapter Is Often Forgotten
When people refurbish an old laptop, they usually think about:
SSD + RAM + battery
but forget the power adapter.
That can be a mistake.
The adapter is responsible for supplying the laptop with stable external power.
A defective charger can cause symptoms that resemble motherboard or battery failure.
Possible symptoms include:
- No charging
- Intermittent charging
- Charging that repeatedly stops and starts
- Laptop shutting down when AC power is connected
- Extremely slow battery charging
- Adapter overheating
- Loose or damaged DC plug
Therefore, testing the charger should be part of a complete refurbishment.
65W AC Adapter: What Does 65W Actually Mean?
The “65W” number represents maximum rated output power.
For example:
19V × 3.42A ≈ 65W
This is the specification associated with the Delta ADP-65JH-HB.
However, 65W does not tell you everything.
A compatible 65W AC Adapter also needs the appropriate:
- Output voltage
- Current capacity
- Connector
- Polarity
- Physical fit
This is why a 65W adapter designed for one laptop may not be suitable for another 65W laptop.
Is a 65W Charger Better Than a 90W Charger?
Not necessarily.
A charger should be selected according to the laptop’s requirements.
If a compatible laptop requires:
19V / 3.42A / 65W
then a properly matched 65W adapter is entirely appropriate.
A 90W adapter is not automatically “better.”
The critical factor is electrical compatibility.
For older laptops, using an incorrectly specified power adapter can be more problematic than simply using a lower-wattage charger.
Delta ADP-65JH-HB: What Makes It Interesting?
The Delta ADP-65JH-HB has a straightforward specification:
19V / 3.42A / 65W
The commonly documented connector specification is:
5.5mm × 2.5mm barrel connector
with center-positive polarity.
This makes the adapter particularly relevant when refurbishing equipment designed around these exact requirements.
For a compatible system, a 65W Laptop Charger can replace an aging or damaged original adapter and help restore reliable AC operation.
The important word is compatible.
It should not be treated as a universal 65W charger.
How to Check Compatibility Before Buying
Before ordering a replacement adapter, follow this checklist.
Check the original charger
Read:
- Input voltage
- Output voltage
- Output current
- Connector
- Polarity
Check the laptop
Look for the power specification on the bottom label or manufacturer documentation.
Compare the voltage
For the ADP-65JH-HB:
19V DC
The laptop must be designed for the corresponding voltage.
Check the current
The ADP-65JH-HB provides:
3.42A
The adapter must be capable of supplying the required current.
Check the connector
The barrel dimensions must match.
Check polarity
The center-positive configuration must be appropriate for the device.
This procedure is especially important when dealing with old laptops because online compatibility lists can sometimes combine several generations and configurations.
Pavilion G6, G575 and U510: Power Compatibility Is Not the Same
This is one of the most important conclusions of the entire comparison.
The three laptops may all be associated with 65W power supplies in different configurations.
But that does not mean their adapters are interchangeable.
The G6 family includes both 65W and higher-power configurations.
Some G575 specifications use 20V/3.25A 65W adapters.
The U510 documentation also identifies 65W adapters around 20V/3.25A.
The Delta ADP-65JH-HB is:
19V/3.42A/65W
Therefore, the correct purchasing approach is not:
“My laptop needs 65W, so any 65W charger will work.”
The correct approach is:
“My laptop requires a specific voltage, current, connector and polarity. Does this 65W adapter match all of them?”
That distinction is critical for safe refurbishment.
Best Refurbishment Candidate: Pavilion G6 High-Spec Version
If you find a G6 with:
- Core i5 or Core i7
- 8GB DDR3
- Dedicated Radeon graphics
- Healthy motherboard
- Functional cooling system
it can be an excellent refurbishment candidate.
Add:
SSD + RAM + good battery + correct power adapter
and the machine can become a capable secondary computer.
It can also be an excellent retro gaming system.
Refurbishment rating: 8.3/10
Best Cheap Repair Project: IdeaPad G575
The G575 is most attractive when it is inexpensive.
Do not spend too much money trying to transform an E-450 system into a modern computer.
Instead, keep the project simple.
A sensible refurbishment is:
SSD + RAM + cooling maintenance + battery inspection
This can produce a functional basic computer without turning the project into an uneconomical rebuild.
Refurbishment rating: 7.2/10
Best Design and Efficiency: IdeaPad U510
The U510 is the most attractive machine if you care about:
- Aluminum construction
- Lower power consumption
- Better portability
- More modern design
- Quiet operation
With an SSD and adequate RAM, it can still serve as a basic Linux or office computer.
Its biggest disadvantage is that its thinner construction makes repair and upgrading less convenient.
Refurbishment rating: 8.5/10
Final Ranking
Performance
High-spec G6 > U510 > G575
Portability
U510 > G6 ≈ G575
Build quality
U510 > G6 > G575
Upgradeability
G6 > G575 > U510
Power efficiency
U510 > G6 > G575
Gaming
High-spec G6 > U510 > G575
Repairability
G6 > G575 > U510
Overall refurbishment value
G6 ≈ U510 > G575
Which Laptop Should You Choose?
The answer depends on your objective.
Choose the Pavilion G6 if you want the greatest performance and upgrade potential.
Choose the IdeaPad G575 if you want a cheap, simple and repair-friendly vintage laptop.
Choose the IdeaPad U510 if you care more about portability, chassis quality and energy efficiency.
But regardless of which machine you choose, do not ignore the charger.
A laptop with a good motherboard, SSD and battery can still be frustrating to use if its original power adapter is failing.
For equipment whose specifications match, a Replacement Power Adapter can be a practical part of the refurbishment process.
The Delta ADP-65JH-HB is particularly worth considering when the required specification is 19V, 3.42A and 65W with the appropriate connector and polarity.
Final Verdict
The HP Pavilion G6, Lenovo IdeaPad G575 and Lenovo IdeaPad U510 represent three different stages of notebook development.
The Pavilion G6 is the classic expandable consumer laptop. Its biggest advantages are configuration flexibility, upgradeability and the availability of higher-performance versions.
The IdeaPad G575 is a simple entry-level machine. It is not fast by today’s standards, but its conventional construction makes it an interesting platform for repair, retro computing and basic office work.
The IdeaPad U510 is the most refined design of the three. Its low-voltage Core i5 processor, aluminum exterior and thinner chassis make it particularly attractive for users who value efficiency and portability.
For refurbishment, the winning formula is not complicated:
SSD + adequate RAM + healthy battery + clean cooling system + correct AC adapter.
And when choosing a Laptop Power Adapter, always verify the exact voltage, current, connector and polarity before connecting it to the laptop.
The most important lesson is simple:
65W does not automatically mean compatible.
A properly matched 65W AC Adapter can be an excellent solution for the right device, but the exact electrical specifications must always come first.
Frequently Asked Questions
Is the HP Pavilion G6 still worth buying in 2026?
Yes, especially high-spec versions with Core i5 or Core i7 processors, dedicated graphics, 8GB or more RAM and a healthy motherboard. Its traditional architecture also makes refurbishment relatively straightforward.
Is the Lenovo IdeaPad G575 still usable?
Yes, but expectations should be realistic. The AMD E-450 is very limited for modern workloads. An SSD and additional RAM can improve responsiveness, but the CPU remains the primary limitation.
Is the U510 faster than the G575?
Yes. The Core i5-3317U is significantly more capable than the AMD E-450 platform and is much better suited to multitasking and everyday office workloads.
Which laptop is easiest to repair?
The Pavilion G6 and IdeaPad G575 are generally easier to service because of their traditional, relatively spacious chassis. The thinner U510 requires more careful disassembly.
Can every 65W laptop use the Delta ADP-65JH-HB?
No. The 65W rating alone is not enough. The laptop must match the adapter’s voltage, current capability, connector and polarity.
What are the specifications of the Delta ADP-65JH-HB?
The commonly specified output is 19V DC, 3.42A and 65W, with a 5.5 × 2.5mm barrel connector and center-positive polarity.
Is the Delta ADP-65JH-HB a replacement battery?
No. It is a 65W AC power adapter, not a laptop battery. It should be promoted as a replacement charger, AC adapter or external power supply.
Should I replace the battery or charger first?
If the laptop does not charge correctly, test the charger first. A faulty AC adapter can produce symptoms that look like battery failure. Once stable external power is confirmed, the battery can be evaluated separately.
Is a 90W adapter always better than a 65W adapter?
No. The correct adapter is the one that matches the laptop’s required electrical specification. Higher wattage alone does not guarantee compatibility