G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, raw graphics performance, VRAM, feature set, power efficiency, pricing context, and long-term value so you can see which GPU actually makes more sense.

GeForce GT 640

2012

Why buy it

✅1.8% more average FPS across 32 tracked games in our benchmark data.
✅Delivers 100+% more G3D Mark for each dollar spent, at 11.8 vs 0 G3D/$ ($99 MSRP vs Unknown MSRP).
✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).

Trade-offs

❌Very weak future-proofing: 2012-era hardware with 4 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌44.4% higher power demand at 65W vs 45W.

GeForce GT 650M

2012

Why buy it

✅Draws 45W instead of 65W, a 20W reduction.

Trade-offs

❌Lower average FPS than GeForce GT 640 across 32 tracked games in our benchmark data.
❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2012-era hardware with 2 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌Lower G3D Mark per dollar, at 0 vs 11.8 G3D/$ (Unknown MSRP vs $99 MSRP).

GeForce GT 640

2012

GeForce GT 650M

2012

Why buy it

✅1.8% more average FPS across 32 tracked games in our benchmark data.
✅Delivers 100+% more G3D Mark for each dollar spent, at 11.8 vs 0 G3D/$ ($99 MSRP vs Unknown MSRP).
✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).

Why buy it

✅Draws 45W instead of 65W, a 20W reduction.

Trade-offs

❌Very weak future-proofing: 2012-era hardware with 4 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌44.4% higher power demand at 65W vs 45W.

Trade-offs

❌Lower average FPS than GeForce GT 640 across 32 tracked games in our benchmark data.
❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2012-era hardware with 2 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌Lower G3D Mark per dollar, at 0 vs 11.8 G3D/$ (Unknown MSRP vs $99 MSRP).

Quick Answers

So, is GeForce GT 640 better than GeForce GT 650M?

Yes, but this is not really about a huge raw performance gap. GeForce GT 640 averages 1.8% more FPS across 32 tracked games in our benchmark data. The broader synthetic picture is also very close at 1,169 vs 1,187 in G3D Mark. The bigger reason to prefer GeForce GT 640 is the overall package: you are getting no meaningful modern upscaling stack.

Which one is more future-proof for 2026 and beyond?

GeForce GT 640 is the more future-proof choice for 2026 and beyond. You are getting more VRAM at 4 GB instead of 2 GB. That extra memory headroom makes it the safer pick for newer games, heavier textures, and higher settings over time.

Which one is the smarter buy today, not just the cheaper card?

GeForce GT 640 can still make sense if you find it at the right price, especially around $99 MSRP. GeForce GT 640 is still the smarter buy for most people, though, because the raw performance is close while the overall package is cleaner. GeForce GT 640 is priced in an unclear MSRP range at $99 MSRP versus an unclear MSRP, and you are getting 1.8% more estimated average FPS across 32 tracked games in our benchmark data and a lower G3D Mark (1,169 vs 1,187). Moving to $99 MSRP gets you and no meaningful modern upscaling stack.

Is GeForce GT 650M still worth buying for gaming in 2026?

Yes. GeForce GT 650M is still a strong gaming card in 2026: it is still comfortable for 1080p and decent for 1440p, though 4K is more situational. Price is really the swing factor here. If you find it at or below an unclear MSRP, it remains a very sensible buy. GeForce GT 640 is still the safer recommendation for most fresh builds because it offers a cleaner overall package with no meaningful modern upscaling stack.

Games Benchmarks

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 9800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

GeForce GT 640 Benchmark Check

GeForce GT 650M Benchmark Check

Path of Exile 2

Preset	GeForce GT 640	GeForce GT 650M
1080p
low	13 FPS	11 FPS
medium	9 FPS	7 FPS
high	5 FPS	4 FPS
ultra	3 FPS	2 FPS
1440p
low	9 FPS	7 FPS
medium	5 FPS	4 FPS
high	2 FPS	2 FPS
ultra	1 FPS	1 FPS
4K
low	4 FPS	3 FPS
medium	2 FPS	2 FPS
high	1 FPS	1 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 650M

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GT 640	GeForce GT 650M
1080p
low	34 FPS	31 FPS
medium	15 FPS	14 FPS
high	11 FPS	10 FPS
ultra	7 FPS	7 FPS
1440p
low	11 FPS	10 FPS
medium	5 FPS	4 FPS
high	4 FPS	3 FPS
ultra	3 FPS	3 FPS
4K
low	4 FPS	3 FPS
medium	2 FPS	2 FPS
high	1 FPS	1 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 650M

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GT 640	GeForce GT 650M
1080p
low	53 FPS	53 FPS
medium	42 FPS	43 FPS
high	35 FPS	36 FPS
ultra	26 FPS	27 FPS
1440p
low	39 FPS	40 FPS
medium	32 FPS	32 FPS
high	26 FPS	27 FPS
ultra	20 FPS	20 FPS
4K
low	26 FPS	27 FPS
medium	21 FPS	21 FPS
high	18 FPS	18 FPS
ultra	13 FPS	13 FPS

Open GeForce GT 640 Open GeForce GT 650M

League of Legends

League of Legends

Valorant

Preset	GeForce GT 640	GeForce GT 650M
1080p
low	53 FPS	53 FPS
medium	42 FPS	43 FPS
high	26 FPS	25 FPS
ultra	16 FPS	16 FPS
1440p
low	6 FPS	6 FPS
medium	4 FPS	4 FPS
high	3 FPS	3 FPS
ultra	2 FPS	2 FPS
4K
low	4 FPS	4 FPS
medium	2 FPS	2 FPS
high	2 FPS	2 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 650M

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GT 640 and GeForce GT 650M

GeForce GT 640

The GeForce GT 640 is manufactured by NVIDIA. It was released in June 5 2012. It features the Kepler architecture. The core clock speed is 902 MHz. It has 384 shading units. The thermal design power (TDP) is 65W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,169 points. Launch price was $99.

GeForce GT 650M

The GeForce GT 650M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 900 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,187 points.

⚡

Graphics Performance

The GeForce GT 640 scores 1,169 and the GeForce GT 650M reaches 1,187 in the G3D Mark benchmark — just a 1.5% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the GeForce GT 650M uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 384 (GeForce GT 650M). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.7296 TFLOPS (GeForce GT 650M).

Feature	GeForce GT 640	GeForce GT 650M
G3D Mark Score	1,169	1,187+2%
Architecture	Kepler	Kepler
Process Node	28 nm	28 nm
Shading Units	384	384
Compute (TFLOPS)	0.6927 TFLOPS	0.7296 TFLOPS+5%
ROPs	16	16
TMUs	32	32
L1 Cache	32 KB	32 KB
L2 Cache	256 KB	256 KB

✨

Advanced Features (DLSS/FSR)

Feature	GeForce GT 640	GeForce GT 650M
Upscaling Tech	Upscaling support	Upscaling support
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	NVIDIA Reflex

💾

Video Memory (VRAM)

The GeForce GT 640 comes with 4 GB of VRAM, while the GeForce GT 650M has 2 GB. The GeForce GT 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.

Feature	GeForce GT 640	GeForce GT 650M
VRAM Capacity	4 GB+100%	2 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	256 KB	256 KB

🖥️

Display & API Support

DirectX support: 11.0 (GeForce GT 640) vs 12 (FL11_0) (GeForce GT 650M). Vulkan: 1.1 vs 1.3. OpenGL: 4.5 vs 4.5. Maximum simultaneous displays: 3 vs 4.

Feature	GeForce GT 640	GeForce GT 650M
DirectX	11.0	12 (FL11_0)+9%
Vulkan	1.1	1.3+18%
OpenGL	4.5	4.5
Max Displays	3	4+33%

🎬

Media & Encoding

Hardware encoder: NVENC 1.0 (GeForce GT 640) vs NVENC (Kepler) (GeForce GT 650M). Decoder: PureVideo HD VP5 vs VP5. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640) vs H.264,VC-1,MPEG-4,MPEG-1/2 (GeForce GT 650M).

Feature	GeForce GT 640	GeForce GT 650M
Encoder	NVENC 1.0	NVENC (Kepler)
Decoder	PureVideo HD VP5	VP5
Codecs	MPEG-2,H.264,VC-1,MPEG-4 ASP	H.264,VC-1,MPEG-4,MPEG-1/2

🔌

Power & Dimensions

The GeForce GT 640 draws 65W versus the GeForce GT 650M's 45W — a 36.4% difference. The GeForce GT 650M is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 350W (GeForce GT 650M). Power connectors: None vs PCIe-powered. Card length: 145mm vs 0mm, occupying 1 vs 0 slots. Typical load temperature: 60°C vs 85°C.

Feature	GeForce GT 640	GeForce GT 650M
TDP	65W	45W-31%
Recommended PSU	300W-14%	350W
Power Connector	None	PCIe-powered
Length	145mm	0mm
Height	111mm	0mm
Slots	1	0-100%
Temp (Load)	60°C-29%	85°C
Perf/Watt	18.0	26.4+47%