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

✅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

❌Very weak future-proofing: 2012-era hardware with 4 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌132.1% higher power demand at 65W vs 28W.

Radeon HD 7750M

2012

Why buy it

✅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.
❌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

Radeon HD 7750M

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.

Why buy it

✅Draws 28W instead of 65W, a 37W 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.
❌132.1% higher power demand at 65W vs 28W.

Trade-offs

❌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 Radeon HD 7750M better than GeForce GT 640?

Yes, but this is not really about a huge raw performance gap. The broader synthetic picture is also very close at 1,169 vs 1,191 in G3D Mark. The bigger reason to prefer Radeon HD 7750M is the overall package: you are getting FSR upscaling, plus much lower power draw (28W vs 65W).

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 and the stronger feature stack with no meaningful modern upscaling stack instead of FSR upscaling. 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?

Radeon HD 7750M is the smarter buy by a wide margin. Radeon HD 7750M is priced in an unclear MSRP range at an unclear MSRP versus $99 MSRP, and you are getting 1.9% higher G3D Mark. GeForce GT 640 really only makes sense now as a very cheap stopgap or a used-market placeholder.

When does GeForce GT 640 make more sense than Radeon HD 7750M?

Yes. GeForce GT 640 is still an excellent gaming GPU in 2026: it is still comfortable for 1080p and decent for 1440p, though 4K is more situational. It makes more sense if your priority is future-proofing and staying closer to $99 MSRP more than squeezing out the extra headroom of Radeon HD 7750M. The trade-off is that Radeon HD 7750M currently gives you 1.9% higher G3D Mark. GeForce GT 640 still holds the G3D-per-dollar lead, so the performance win comes with a real value premium.

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

Radeon HD 7750M Benchmark Check

Path of Exile 2

Preset	GeForce GT 640	Radeon HD 7750M
1080p
low	16 FPS	17 FPS
medium	11 FPS	10 FPS
high	7 FPS	6 FPS
ultra	4 FPS	3 FPS
1440p
low	11 FPS	10 FPS
medium	6 FPS	5 FPS
high	3 FPS	3 FPS
ultra	1 FPS	1 FPS
4K
low	4 FPS	4 FPS
medium	3 FPS	2 FPS
high	1 FPS	1 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open Radeon HD 7750M

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GT 640	Radeon HD 7750M
1080p
low	36 FPS	54 FPS
medium	16 FPS	43 FPS
high	11 FPS	32 FPS
ultra	8 FPS	24 FPS
1440p
low	12 FPS	40 FPS
medium	5 FPS	26 FPS
high	4 FPS	20 FPS
ultra	3 FPS	16 FPS
4K
low	4 FPS	24 FPS
medium	2 FPS	15 FPS
high	2 FPS	11 FPS
ultra	1 FPS	8 FPS

Open GeForce GT 640 Open Radeon HD 7750M

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GT 640	Radeon HD 7750M
1080p
low	53 FPS	54 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 Radeon HD 7750M

League of Legends

League of Legends

Valorant

Preset	GeForce GT 640	Radeon HD 7750M
1080p
low	53 FPS	54 FPS
medium	42 FPS	43 FPS
high	26 FPS	36 FPS
ultra	16 FPS	27 FPS
1440p
low	6 FPS	9 FPS
medium	4 FPS	7 FPS
high	3 FPS	6 FPS
ultra	2 FPS	4 FPS
4K
low	4 FPS	6 FPS
medium	2 FPS	4 FPS
high	2 FPS	4 FPS
ultra	1 FPS	3 FPS

Open GeForce GT 640 Open Radeon HD 7750M

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GT 640 and Radeon HD 7750M

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 gives access to NVIDIA DLSS (Deep Learning Super Sampling), widely regarding as the superior upscaling method for image quality. The Radeon HD 7750M relies on FSR (FidelityFX Super Resolution), which is capable but generally slightly noisier than DLSS in motion.

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 comes with 4 GB of VRAM, while the Radeon HD 7750M has 2 GB. The GeForce GT 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs System.

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%