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

✅0.2% more average FPS across 50 tracked games in our benchmark data.
✅700% more VRAM for high-resolution textures and newer games (4 GB vs 512 MB).

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.
❌32.7% higher power demand at 65W vs 49W.

GeForce GT 640 Rev. 2

2013

Why buy it

✅Draws 49W instead of 65W, a 16W reduction.

Trade-offs

❌Lower average FPS than GeForce GT 640 across 50 tracked games in our benchmark data.
❌Less VRAM, with 512 MB vs 4 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2013-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.

GeForce GT 640

2012

GeForce GT 640 Rev. 2

2013

Why buy it

✅0.2% more average FPS across 50 tracked games in our benchmark data.
✅700% more VRAM for high-resolution textures and newer games (4 GB vs 512 MB).

Why buy it

✅Draws 49W instead of 65W, a 16W 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.
❌32.7% higher power demand at 65W vs 49W.

Trade-offs

❌Lower average FPS than GeForce GT 640 across 50 tracked games in our benchmark data.
❌Less VRAM, with 512 MB vs 4 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2013-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.

Quick Answers

So, is GeForce GT 640 better than GeForce GT 640 Rev. 2?

Yes, but this is not really about a huge raw performance gap. GeForce GT 640 averages 0.2% more FPS across 50 tracked games in our benchmark data. The broader synthetic picture is also very close at 1,169 vs 1,168 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 512 MB. 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 in basically the same MSRP band at $99 MSRP versus $99 MSRP, and you are getting 0.2% more estimated average FPS across 50 tracked games in our benchmark data and 0.1% higher G3D Mark. GeForce GT 640 Rev. 2 is the newer 2013 card, so it still has a real case if you care more about newer architecture and lower power draw (49W vs 65W) than about squeezing out the strongest gaming value today.

When does GeForce GT 640 Rev. 2 make more sense than GeForce GT 640?

Yes. GeForce GT 640 Rev. 2 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 newer architecture, lower power draw (49W vs 65W), and staying closer to $99 MSRP more than squeezing out the extra headroom of GeForce GT 640. The trade-off is that GeForce GT 640 currently gives you 0.1% higher G3D Mark and 0.2% more estimated average FPS across 50 tracked games in our benchmark data. It only holds a slight 0.1% edge in G3D-per-dollar, so the value lead is real but narrow.

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 640 Rev. 2 Benchmark Check

Path of Exile 2

Preset	GeForce GT 640	GeForce GT 640 Rev. 2
1080p
low	13 FPS	12 FPS
medium	9 FPS	8 FPS
high	5 FPS	5 FPS
ultra	3 FPS	3 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	4 FPS
medium	2 FPS	2 FPS
high	1 FPS	1 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 640 Rev. 2

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GT 640	GeForce GT 640 Rev. 2
1080p
low	34 FPS	37 FPS
medium	15 FPS	18 FPS
high	11 FPS	13 FPS
ultra	7 FPS	9 FPS
1440p
low	11 FPS	11 FPS
medium	5 FPS	5 FPS
high	4 FPS	4 FPS
ultra	3 FPS	3 FPS
4K
low	4 FPS	4 FPS
medium	2 FPS	2 FPS
high	1 FPS	2 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 640 Rev. 2

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GT 640	GeForce GT 640 Rev. 2
1080p
low	53 FPS	53 FPS
medium	42 FPS	42 FPS
high	35 FPS	35 FPS
ultra	26 FPS	26 FPS
1440p
low	39 FPS	39 FPS
medium	32 FPS	32 FPS
high	26 FPS	26 FPS
ultra	20 FPS	20 FPS
4K
low	26 FPS	26 FPS
medium	21 FPS	21 FPS
high	18 FPS	18 FPS
ultra	13 FPS	13 FPS

Open GeForce GT 640 Open GeForce GT 640 Rev. 2

League of Legends

League of Legends

Valorant

Preset	GeForce GT 640	GeForce GT 640 Rev. 2
1080p
low	53 FPS	38 FPS
medium	42 FPS	30 FPS
high	26 FPS	18 FPS
ultra	16 FPS	13 FPS
1440p
low	6 FPS	4 FPS
medium	4 FPS	3 FPS
high	3 FPS	3 FPS
ultra	2 FPS	2 FPS
4K
low	4 FPS	3 FPS
medium	2 FPS	2 FPS
high	2 FPS	2 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 640 Open GeForce GT 640 Rev. 2

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GT 640 and GeForce GT 640 Rev. 2

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 640 Rev. 2

The GeForce GT 640 Rev. 2 is manufactured by NVIDIA. It was released in May 29 2013. It features the Kepler 2.0 architecture. The core clock speed is 1046 MHz. It has 384 shading units. The thermal design power (TDP) is 49W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,168 points. Launch price was $89.

⚡

Graphics Performance

The GeForce GT 640 scores 1,169 and the GeForce GT 640 Rev. 2 reaches 1,168 in the G3D Mark benchmark — just a 0.1% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the GeForce GT 640 Rev. 2 uses Kepler 2.0, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 384 (GeForce GT 640 Rev. 2). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.8033 TFLOPS (GeForce GT 640 Rev. 2).

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
G3D Mark Score	1,169	1,168
Architecture	Kepler	Kepler 2.0
Process Node	28 nm	28 nm
Shading Units	384	384
Compute (TFLOPS)	0.6927 TFLOPS	0.8033 TFLOPS+16%
ROPs	16+100%	8
TMUs	32	32
L1 Cache	32 KB	32 KB
L2 Cache	256 KB+100%	128 KB

✨

Advanced Features (DLSS/FSR)

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
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 640 Rev. 2 has 512 MB. The GeForce GT 640 offers 700% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 256 KB (GeForce GT 640) vs 128 KB (GeForce GT 640 Rev. 2) — the GeForce GT 640 has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
VRAM Capacity	4 GB+700%	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit+100%	64-bit
L2 Cache	256 KB+100%	128 KB

🖥️

Display & API Support

DirectX support: 11.0 (GeForce GT 640) vs 12 (11_0) (GeForce GT 640 Rev. 2). Vulkan: 1.1 vs 1.2. OpenGL: 4.5 vs 4.6. Maximum simultaneous displays: 3 vs 3.

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
DirectX	11.0	12 (11_0)+9%
Vulkan	1.1	1.2+9%
OpenGL	4.5	4.6+2%
Max Displays	3	3

🎬

Media & Encoding

Hardware encoder: NVENC 1.0 (GeForce GT 640) vs NVENC (Kepler) (GeForce GT 640 Rev. 2). Decoder: PureVideo HD VP5 vs PureVideo HD 5. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640) vs H.264,MPEG-2,VC-1 (GeForce GT 640 Rev. 2).

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
Encoder	NVENC 1.0	NVENC (Kepler)
Decoder	PureVideo HD VP5	PureVideo HD 5
Codecs	MPEG-2,H.264,VC-1,MPEG-4 ASP	H.264,MPEG-2,VC-1

🔌

Power & Dimensions

The GeForce GT 640 draws 65W versus the GeForce GT 640 Rev. 2's 49W — a 28.1% difference. The GeForce GT 640 Rev. 2 is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 300W (GeForce GT 640 Rev. 2). Power connectors: None vs None. Card length: 145mm vs 145mm, occupying 1 vs 1 slots. Typical load temperature: 60°C vs 65.

Feature	GeForce GT 640	GeForce GT 640 Rev. 2
TDP	65W	49W-25%
Recommended PSU	300W	300W
Power Connector	None	None
Length	145mm	145mm
Height	111mm	111mm
Slots	1	1
Temp (Load)	60°C-8%	65
Perf/Watt	18.0	23.8+32%

💰

Value Analysis

The GeForce GT 640 launched at $99 MSRP, while the GeForce GT 640 Rev. 2 launched at $99. Performance per dollar on MSRP (G3D Mark / MSRP): 11.8 (GeForce GT 640) vs 11.8 (GeForce GT 640 Rev. 2) — the GeForce GT 640 Rev. 2 offers 0% better value. The GeForce GT 640 Rev. 2 is the newer GPU (2013 vs 2012).