GeForce GT 640 Rev. 2 vs Radeon R7 +8G

CPU

GPU

GeForce GT 640 Rev. 2

2013Core: 1046 MHz

Similar parts

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Radeon R7 +8G

2015Core: 900 MHzBoost: 915 MHz

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GeForce GT 640 Rev. 2 vs Radeon R7 +8G Performance Spectrum

GeForce GT 640 Rev. 2

0.5 GB 49

1,168

0.0%

GeForce GTX 1050 Ti (móvel)

GeForce GTX 1070 (móvel)

GeForce RTX 2080 (Mobile)

GeForce RTX 4060

Radeon R7 +8G

0.5 GB 30

1,191

+2.0%

Radeon HD 2900 XT

Radeon R7 A8-7680

Radeon R7 PRO A10-9700E

About G3D Mark

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 Rev. 2 vs Radeon R7 +8G 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 Rev. 2 vs Radeon R7 +8G: 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 Rev. 2

2013

Why buy it

✅Measures 145mm instead of 168mm, a 23mm shorter card that is more SFF-friendly.

Trade-offs

❌Lower average FPS than Radeon R7 +8G across 50 tracked games in our benchmark data.
❌2013 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
102% HIGHER MSRP
$99 MSRPvs$49 MSRP
❌Lower G3D Mark per dollar, at 11.8 vs 24.3 G3D/$ ($99 MSRP vs $49 MSRP).
❌63.3% higher power demand at 49W vs 30W.

Radeon R7 +8G

2015

Why buy it

✅30.0% more average FPS across 50 tracked games in our benchmark data.
✅Costs $50 less on MSRP ($49 MSRP vs $99 MSRP).
✅Delivers 106% more G3D Mark for each dollar spent, at 24.3 vs 11.8 G3D/$ ($49 MSRP vs $99 MSRP).
✅Draws 30W instead of 49W, a 19W reduction.

Trade-offs

❌2015 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌15.9% longer card at 168mm vs 145mm.

Quick Answers

Which GPU is faster for gaming right now?

Radeon R7 +8G is the faster gaming card right now. In our data, it leads by 30.0% in average FPS across 50 tracked games in our benchmark data and by 2% in PassMark G3D (1,191 vs 1,168), so the answer here is pretty clean.

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

GeForce GT 640 Rev. 2 is the safer long-term pick for 2026 and beyond because it comes out ahead on the available hardware-headroom signals for this matchup.

Which GPU is the better buy today?

Radeon R7 +8G makes the most sense to buy today. It is $50 cheaper on MSRP at $49 vs $99, and it leads G3D-per-dollar by 106% (24.3 vs 11.8), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon R7 +8G is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce GT 640 Rev. 2 has the stronger long-term case.

GeForce GT 640 Rev. 2 vs Radeon R7 +8G Technical Specifications

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

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.

Radeon R7 +8G

The Radeon R7 +8G is manufactured by AMD. It was released in May 5 2015. It features the GCN 1.0 architecture. The core clock ranges from 900 MHz to 915 MHz. It has 640 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,191 points.

⚡

Graphics Performance

The GeForce GT 640 Rev. 2 scores 1,168 and the Radeon R7 +8G reaches 1,191 in the G3D Mark benchmark — just a 2% difference, making them near-identical in rasterization performance. The GeForce GT 640 Rev. 2 is built on Kepler 2.0 while the Radeon R7 +8G uses GCN 1.0, both on a 28 nm process. Shader units: 384 (GeForce GT 640 Rev. 2) vs 640 (Radeon R7 +8G). Raw compute: 0.8033 TFLOPS (GeForce GT 640 Rev. 2) vs 1.171 TFLOPS (Radeon R7 +8G).

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
G3D Mark Score	1,168	1,191+2%
Architecture	Kepler 2.0	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	384	640+67%
Compute (TFLOPS)	0.8033 TFLOPS	1.171 TFLOPS+46%
ROPs	8	16+100%
TMUs	32	40+25%
L1 Cache	32 KB	160 KB+400%
L2 Cache	128 KB	256 KB+100%

✨

Advanced Features (DLSS/FSR)

The GeForce GT 640 Rev. 2 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon R7 +8G leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
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)

Both cards ship with 512 MB of GDDR5. Memory bus width is 64-bit on the GeForce GT 640 Rev. 2 and 128-bit on the Radeon R7 +8G. L2 Cache: 128 KB (GeForce GT 640 Rev. 2) vs 256 KB (Radeon R7 +8G) — the Radeon R7 +8G has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
VRAM Capacity	0.5 GB	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	64-bit	128-bit+100%
L2 Cache	128 KB	256 KB+100%

🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce GT 640 Rev. 2) vs 12 (11_1) (Radeon R7 +8G). Vulkan: 1.2 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 2.

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
DirectX	12 (11_0)	12 (11_1)
Vulkan	1.2	1.2
OpenGL	4.6	4.6
Max Displays	3+50%	2

🎬

Media & Encoding

Hardware encoder: NVENC (Kepler) (GeForce GT 640 Rev. 2) vs VCE 2.0 (Radeon R7 +8G). Decoder: PureVideo HD 5 vs UVD 4.0. Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 640 Rev. 2) vs H.264,MPEG-4,VC-1,MPEG-2 (Radeon R7 +8G).

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
Encoder	NVENC (Kepler)	VCE 2.0
Decoder	PureVideo HD 5	UVD 4.0
Codecs	H.264,MPEG-2,VC-1	H.264,MPEG-4,VC-1,MPEG-2

🔌

Power & Dimensions

The GeForce GT 640 Rev. 2 draws 49W versus the Radeon R7 +8G's 30W — a 48.1% difference. The Radeon R7 +8G is more power-efficient. Recommended PSU: 300W (GeForce GT 640 Rev. 2) vs 350W (Radeon R7 +8G). Power connectors: None vs PCIe-powered. Card length: 145mm vs 168mm, occupying 1 vs 1 slots. Typical load temperature: 65 vs 75.

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
TDP	49W	30W-39%
Recommended PSU	300W-14%	350W
Power Connector	None	PCIe-powered
Length	145mm	168mm
Height	111mm	111mm
Slots	1	1
Temp (Load)	65-13%	75
Perf/Watt	23.8	39.7+67%

💰

Value Analysis

At launch, the GeForce GT 640 Rev. 2 came in at $99, while the Radeon R7 +8G launched at $49. On MSRP, Radeon R7 +8G was 50.5% cheaper ($50 less). Performance per dollar on MSRP (G3D Mark / MSRP): 11.8 (GeForce GT 640 Rev. 2) vs 24.3 (Radeon R7 +8G) — the Radeon R7 +8G offers 105.9% better value. The newer card here is Radeon R7 +8G (2015 vs 2013).

Feature	GeForce GT 640 Rev. 2	Radeon R7 +8G
MSRP	$99	$49-51%
Performance per Dollar	11.8	24.3+106%
Codename	GK208	Tropo
Release	May 29 2013	May 5 2015
Ranking	#786	#737

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