GeForce GT 640 vs Radeon HD 7750M

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 Radeon HD 7750M 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 Radeon HD 7750M: 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

✅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).
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than Radeon HD 7750M across 50 tracked games in our benchmark data.
❌2012 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌132.1% higher power demand at 65W vs 28W.

Radeon HD 7750M

2012

Why buy it

✅13.3% more average FPS across 50 tracked games in our benchmark data.
✅Draws 28W instead of 65W, a 37W reduction.

Trade-offs

❌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?

Radeon HD 7750M is the faster gaming card right now. In our data, it leads by 13.3% in average FPS across 50 tracked games in our benchmark data and by 1.9% in PassMark G3D (1,191 vs 1,169), so the answer here is pretty clean.

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. Radeon HD 7750M still makes more sense if max raw gaming performance matters more than value.

GeForce GT 640 vs Radeon HD 7750M 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.

Radeon HD 7750M

The Radeon HD 7750M is manufactured by AMD. It was released in April 24 2012. It features the GCN 1.0 architecture. The core clock speed is 575 MHz. It has 512 shading units. The thermal design power (TDP) is 28W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,191 points.

⚡

Graphics Performance

The GeForce GT 640 scores 1,169 and the Radeon HD 7750M reaches 1,191 in the G3D Mark benchmark — just a 1.9% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the Radeon HD 7750M uses GCN 1.0, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 512 (Radeon HD 7750M). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.5888 TFLOPS (Radeon HD 7750M).

Feature	GeForce GT 640	Radeon HD 7750M
G3D Mark Score	1,169	1,191+2%
Architecture	Kepler	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	384	512+33%
Compute (TFLOPS)	0.6927 TFLOPS+18%	0.5888 TFLOPS
ROPs	16	16
TMUs	32	32
L1 Cache	32 KB	128 KB+300%
L2 Cache	256 KB	256 KB

✨

Advanced Features (DLSS/FSR)

The GeForce GT 640 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon HD 7750M leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GT 640	Radeon HD 7750M
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	AMD Anti-Lag

💾

Video Memory (VRAM)

The GeForce GT 640 has 4 GB of VRAM, while the Radeon HD 7750M 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 System on the Radeon HD 7750M.

Feature	GeForce GT 640	Radeon HD 7750M
VRAM Capacity	4 GB+100%	2 GB
Memory Type	GDDR5	Shared
Memory Bandwidth	Unknown	System
Bus Width	128-bit	System
L2 Cache	256 KB	256 KB

🖥️

Display & API Support

DirectX support: 11.0 (GeForce GT 640) vs 12 (Radeon HD 7750M). Vulkan: 1.1 vs 1.2. OpenGL: 4.5 vs 4.6. Maximum simultaneous displays: 3 vs 6.

Feature	GeForce GT 640	Radeon HD 7750M
DirectX	11.0	12+9%
Vulkan	1.1	1.2+9%
OpenGL	4.5	4.6+2%
Max Displays	3	6+100%

🎬

Media & Encoding

Hardware encoder: NVENC 1.0 (GeForce GT 640) vs VCE 1.0 (Radeon HD 7750M). Decoder: PureVideo HD VP5 vs UVD3. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640) vs H.264,VC-1,MPEG-2,MVC (Radeon HD 7750M).

Feature	GeForce GT 640	Radeon HD 7750M
Encoder	NVENC 1.0	VCE 1.0
Decoder	PureVideo HD VP5	UVD3
Codecs	MPEG-2,H.264,VC-1,MPEG-4 ASP	H.264,VC-1,MPEG-2,MVC

🔌

Power & Dimensions

The GeForce GT 640 draws 65W versus the Radeon HD 7750M's 28W — a 79.6% difference. The Radeon HD 7750M is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 350W (Radeon HD 7750M). Power connectors: None vs 1x 6-pin. Typical load temperature: 60°C vs 75°C.

Feature	GeForce GT 640	Radeon HD 7750M
TDP	65W	28W-57%
Recommended PSU	300W-14%	350W
Power Connector	None	1x 6-pin
Length	145mm	—
Height	111mm	—
Slots	1	—
Temp (Load)	60°C-20%	75°C
Perf/Watt	18.0	42.5+136%