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 830A vs GeForce GT 640 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 830A vs GeForce GT 640: 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 830A

2014

Why buy it

✅47.8% more average FPS across 50 tracked games in our benchmark data.
✅Draws 33W instead of 65W, a 32W reduction.

Trade-offs

❌Less VRAM, with 512 MB vs 4 GB for high-resolution textures and newer games.
❌2014 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
1% HIGHER MSRP
$100 MSRPvs$99 MSRP

GeForce GT 640

2012

Why buy it

✅Costs $1 less on MSRP ($99 MSRP vs $100 MSRP).
✅700% more VRAM for high-resolution textures and newer games (4 GB vs 512 MB).

Trade-offs

❌Lower average FPS than GeForce 830A 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.
❌97% higher power demand at 65W vs 33W.

Quick Answers

Which GPU is faster for gaming right now?

GeForce 830A is the faster gaming card right now. In our data, it leads by 47.8% in average FPS across 50 tracked games in our benchmark data and by 0.3% in PassMark G3D (1,173 vs 1,169), so the answer here is pretty clean.

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

GeForce 830A is the safer long-term pick for 2026 and beyond. The case is simple: a newer 2014 generation instead of 2012. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

GeForce GT 640 makes the most sense to buy today. It is $1 cheaper on MSRP at $99 vs $100, and it leads G3D-per-dollar by 0.7% (11.8 vs 11.7), which is enough to swing the recommendation its way. If you are mainly targeting 1080p and some 1440p, GeForce GT 640 is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce 830A has the stronger long-term case.

GeForce 830A vs GeForce GT 640 Technical Specifications

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

GeForce 830A

The GeForce 830A is manufactured by NVIDIA. It was released in July 22 2014. It features the Maxwell architecture. The core clock ranges from 1082 MHz to 1150 MHz. It has 256 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,173 points.

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.

⚡

Graphics Performance

The GeForce 830A scores 1,173 and the GeForce GT 640 reaches 1,169 in the G3D Mark benchmark — just a 0.3% difference, making them near-identical in rasterization performance. The GeForce 830A is built on Maxwell while the GeForce GT 640 uses Kepler, both on a 28 nm process. Shader units: 256 (GeForce 830A) vs 384 (GeForce GT 640). Raw compute: 0.5888 TFLOPS (GeForce 830A) vs 0.6927 TFLOPS (GeForce GT 640).

Feature	GeForce 830A	GeForce GT 640
G3D Mark Score	1,173	1,169
Architecture	Maxwell	Kepler
Process Node	28 nm	28 nm
Shading Units	256	384+50%
Compute (TFLOPS)	0.5888 TFLOPS	0.6927 TFLOPS+18%
ROPs	8	16+100%
TMUs	16	32+100%
L1 Cache	128 KB+300%	32 KB
L2 Cache	1 MB+300%	0.25 MB

✨

Advanced Features (DLSS/FSR)

Feature	GeForce 830A	GeForce GT 640
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 830A has 512 MB of VRAM, while the GeForce GT 640 carries 4 GB. GeForce GT 640 gives you 700% 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 830A and 128-bit on the GeForce GT 640. L2 Cache: 1 MB (GeForce 830A) vs 0.25 MB (GeForce GT 640) — the GeForce 830A has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce 830A	GeForce GT 640
VRAM Capacity	0.5 GB	4 GB+700%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	1 MB+300%	0.25 MB

🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce 830A) vs 11.0 (GeForce GT 640). Vulkan: 1.1 vs 1.1. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 2 vs 3.

Feature	GeForce 830A	GeForce GT 640
DirectX	12 (11_0)+9%	11.0
Vulkan	1.1	1.1
OpenGL	4.6+2%	4.5
Max Displays	2	3+50%

🎬

Media & Encoding

Hardware encoder: NVENC 3.0 (GeForce 830A) vs NVENC 1.0 (GeForce GT 640). Decoder: VP6 vs PureVideo HD VP5. Supported codecs: H.264,MPEG-2,VC-1 (GeForce 830A) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640).

Feature	GeForce 830A	GeForce GT 640
Encoder	NVENC 3.0	NVENC 1.0
Decoder	VP6	PureVideo HD VP5
Codecs	H.264,MPEG-2,VC-1	MPEG-2,H.264,VC-1,MPEG-4 ASP

🔌

Power & Dimensions

The GeForce 830A draws 33W versus the GeForce GT 640's 65W — a 65.3% difference. The GeForce 830A is more power-efficient. Recommended PSU: 350W (GeForce 830A) vs 300W (GeForce GT 640). Power connectors: Legacy vs None. Card length: 0mm vs 145mm, occupying 0 vs 1 slots. Typical load temperature: 80 vs 60°C.

Feature	GeForce 830A	GeForce GT 640
TDP	33W-49%	65W
Recommended PSU	350W	300W-14%
Power Connector	Legacy	None
Length	0mm	145mm
Height	0mm	111mm
Slots	0-100%	1
Temp (Load)	80	60°C-25%
Perf/Watt	35.5+97%	18.0

💰

Value Analysis

At launch, the GeForce 830A came in at $100, while the GeForce GT 640 launched at $99. On MSRP, GeForce GT 640 was 1% cheaper ($1 less). Performance per dollar on MSRP (G3D Mark / MSRP): 11.7 (GeForce 830A) vs 11.8 (GeForce GT 640) — the GeForce GT 640 offers 0.9% better value. The newer card here is GeForce 830A (2014 vs 2012).

Feature	GeForce 830A	GeForce GT 640
MSRP	$100	$99-1%
Performance per Dollar	11.7	11.8
Codename	GM108	GK107
Release	July 22 2014	June 5 2012
Ranking	#832	#837

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