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 830A

2014

Why buy it

✅52.5% more average FPS across 29 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.
❌Very weak future-proofing: 2014-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌
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 29 tracked games in our benchmark data.
❌Very weak future-proofing: 2012-era hardware with 4 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌97% higher power demand at 65W vs 33W.

GeForce 830A

2014

GeForce GT 640

2012

Why buy it

✅52.5% more average FPS across 29 tracked games in our benchmark data.
✅Draws 33W instead of 65W, a 32W reduction.

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

❌Less VRAM, with 512 MB vs 4 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2014-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌
1% HIGHER MSRP
$100 MSRPvs$99 MSRP

Trade-offs

❌Lower average FPS than GeForce 830A across 29 tracked games in our benchmark data.
❌Very weak future-proofing: 2012-era hardware with 4 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌97% higher power demand at 65W vs 33W.

Quick Answers

So, is GeForce 830A better than GeForce GT 640?

Yes. GeForce 830A is the better GPU overall here. You are getting 52.5% more average FPS across 29 tracked games in our benchmark data and 0.3% higher PassMark G3D performance. It also comes from 2014 instead of 2012, which helps its case as the more complete modern gaming card.

Which one is more future-proof for 2026 and beyond?

GeForce 830A is the more future-proof choice for 2026 and beyond. You are getting a newer 2014 generation instead of 2012. That makes it the safer long-run choice for modern games.

Which one is the smarter buy today, not just the cheaper card?

GeForce 830A is the smarter buy by a wide margin. GeForce 830A is about 1.0% more expensive on MSRP at $100 MSRP versus $99 MSRP, and you are getting 52.5% more estimated average FPS across 29 tracked games in our benchmark data and 0.3% higher G3D Mark. GeForce GT 640 really only makes sense now as a very cheap stopgap or a used-market placeholder.

Is GeForce GT 640 still worth buying for gaming in 2026?

No, not for a fresh gaming build. GeForce GT 640 is 2012 hardware with 4 GB of VRAM, 1,169 in G3D Mark, and no meaningful modern upscaling stack. That is simply too far behind to be an easy modern recommendation.

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 830A Benchmark Check

GeForce GT 640 Benchmark Check

Path of Exile 2

Preset	GeForce 830A	GeForce GT 640
1080p
low	27 FPS	13 FPS
medium	17 FPS	9 FPS
high	11 FPS	5 FPS
ultra	7 FPS	3 FPS
1440p
low	16 FPS	9 FPS
medium	10 FPS	5 FPS
high	5 FPS	2 FPS
ultra	3 FPS	1 FPS
4K
low	7 FPS	4 FPS
medium	5 FPS	2 FPS
high	3 FPS	1 FPS
ultra	2 FPS	1 FPS

Open GeForce 830A Open GeForce GT 640

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce 830A	GeForce GT 640
1080p
low	53 FPS	34 FPS
medium	42 FPS	15 FPS
high	33 FPS	11 FPS
ultra	21 FPS	7 FPS
1440p
low	21 FPS	11 FPS
medium	15 FPS	5 FPS
high	10 FPS	4 FPS
ultra	8 FPS	3 FPS
4K
low	6 FPS	4 FPS
medium	4 FPS	2 FPS
high	4 FPS	1 FPS
ultra	3 FPS	1 FPS

Open GeForce 830A Open GeForce GT 640

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce 830A	GeForce GT 640
1080p
low	53 FPS	53 FPS
medium	42 FPS	42 FPS
high	35 FPS	35 FPS
ultra	26 FPS	26 FPS
1440p
low	40 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 830A Open GeForce GT 640

League of Legends

League of Legends

Valorant

Preset	GeForce 830A	GeForce GT 640
1080p
low	47 FPS	53 FPS
medium	38 FPS	42 FPS
high	30 FPS	26 FPS
ultra	26 FPS	16 FPS
1440p
low	9 FPS	6 FPS
medium	7 FPS	4 FPS
high	7 FPS	3 FPS
ultra	6 FPS	2 FPS
4K
low	7 FPS	4 FPS
medium	5 FPS	2 FPS
high	4 FPS	2 FPS
ultra	4 FPS	1 FPS

Open GeForce 830A Open GeForce GT 640

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce 830A and GeForce GT 640

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 comes with 512 MB of VRAM, while the GeForce GT 640 has 4 GB. The GeForce GT 640 offers 700% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. 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

The GeForce 830A launched at $100 MSRP, while the GeForce GT 640 launched at $99. The GeForce GT 640 costs 1% less ($1 savings) on MSRP. 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 GeForce 830A is the newer GPU (2014 vs 2012).