GeForce GT 640 vs GeForce GT 650M

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.

GeForce GT 640 vs GeForce GT 650M FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

GeForce GT 640 vs GeForce GT 650M: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

GeForce GT 640

2012

Why buy it

✅0.8% more average FPS across 50 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

❌2012 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌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 50 tracked games in our benchmark data.
❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌Lower G3D Mark per dollar, at 0 vs 11.8 G3D/$ (Unknown MSRP vs $99 MSRP).

Quick Answers

Which GPU is faster for gaming right now?

GeForce GT 640 is the faster gaming card right now. In our data, it leads by 0.8% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward GeForce GT 650M instead at 1,187 vs 1,169, so for this question the real-game FPS result matters more than the synthetic split.

Which GPU is the safer long-term pick for 2026 and beyond?

GeForce GT 640 is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB vs 2 GB of VRAM. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

GeForce GT 640 makes the most sense today based on the pricing and value data we have for this matchup.

GeForce GT 640 vs GeForce GT 650M Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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.

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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

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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

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Video Memory (VRAM)

The GeForce GT 640 has 4 GB of VRAM, while the GeForce GT 650M carries 2 GB. GeForce GT 640 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce GT 640 and 128-bit on the GeForce GT 650M.

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

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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%

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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

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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%