GeForce GT 640 vs Quadro K620M

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).

Trade-offs

❌Lower average FPS than Quadro K620M across 50 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.
❌116.7% higher power demand at 65W vs 30W.

Quadro K620M

2015

Why buy it

✅49.4% more average FPS across 50 tracked games in our benchmark data.
✅Draws 30W instead of 65W, a 35W reduction.
✅More future proof: Maxwell (2014−2017) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Very weak future-proofing: 2015-era hardware with 4 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

Quadro K620M

2015

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 11.8 vs 0 G3D/$ ($99 MSRP vs Unknown MSRP).

Why buy it

✅49.4% more average FPS across 50 tracked games in our benchmark data.
✅Draws 30W instead of 65W, a 35W reduction.
✅More future proof: Maxwell (2014−2017) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than Quadro K620M across 50 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.
❌116.7% higher power demand at 65W vs 30W.

Trade-offs

❌Very weak future-proofing: 2015-era hardware with 4 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 Quadro K620M better than GeForce GT 640?

Yes. Quadro K620M is the better GPU overall here. You are getting 49.4% more average FPS across 50 tracked games in our benchmark data and 0.9% higher PassMark G3D performance. It also comes from 2015 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 GT 640 is the safer long-term GPU choice because it gives you the stronger overall hardware and feature outlook for modern games.

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

Quadro K620M is the smarter buy by a wide margin. Quadro K620M is priced in an unclear MSRP range at an unclear MSRP versus $99 MSRP, and you are getting 49.4% more estimated average FPS across 50 tracked games in our benchmark data and a lower G3D Mark (1,159 vs 1,169). 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 Quadro K620M?

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 Quadro K620M. The trade-off is that Quadro K620M currently gives you a lower G3D Mark (1,159 vs 1,169) and 49.4% more estimated average FPS across 50 tracked games in our benchmark data. 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

Quadro K620M Benchmark Check

Path of Exile 2

Preset	GeForce GT 640	Quadro K620M
1080p
low	13 FPS	29 FPS
medium	9 FPS	19 FPS
high	5 FPS	13 FPS
ultra	3 FPS	8 FPS
1440p
low	9 FPS	18 FPS
medium	5 FPS	12 FPS
high	2 FPS	6 FPS
ultra	1 FPS	4 FPS
4K
low	4 FPS	8 FPS
medium	2 FPS	5 FPS
high	1 FPS	3 FPS
ultra	1 FPS	2 FPS

Open GeForce GT 640 Open Quadro K620M

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GT 640	Quadro K620M
1080p
low	34 FPS	52 FPS
medium	15 FPS	42 FPS
high	11 FPS	33 FPS
ultra	7 FPS	19 FPS
1440p
low	11 FPS	22 FPS
medium	5 FPS	16 FPS
high	4 FPS	11 FPS
ultra	3 FPS	8 FPS
4K
low	4 FPS	6 FPS
medium	2 FPS	4 FPS
high	1 FPS	4 FPS
ultra	1 FPS	2 FPS

Open GeForce GT 640 Open Quadro K620M

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GT 640	Quadro K620M
1080p
low	53 FPS	52 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	31 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	17 FPS
ultra	13 FPS	13 FPS

Open GeForce GT 640 Open Quadro K620M

League of Legends

League of Legends

Valorant

Preset	GeForce GT 640	Quadro K620M
1080p
low	53 FPS	52 FPS
medium	42 FPS	42 FPS
high	26 FPS	35 FPS
ultra	16 FPS	26 FPS
1440p
low	6 FPS	39 FPS
medium	4 FPS	31 FPS
high	3 FPS	26 FPS
ultra	2 FPS	20 FPS
4K
low	4 FPS	26 FPS
medium	2 FPS	21 FPS
high	2 FPS	17 FPS
ultra	1 FPS	13 FPS

Open GeForce GT 640 Open Quadro K620M

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GT 640 and Quadro K620M

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.

Quadro K620M

The Quadro K620M is manufactured by NVIDIA. It was released in March 1 2015. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,159 points.

⚡

Graphics Performance

The GeForce GT 640 scores 1,169 and the Quadro K620M reaches 1,159 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the Quadro K620M uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 384 (Quadro K620M). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.8632 TFLOPS (Quadro K620M).

Feature	GeForce GT 640	Quadro K620M
G3D Mark Score	1,169	1,159
Architecture	Kepler	Maxwell
Process Node	28 nm	28 nm
Shading Units	384	384
Compute (TFLOPS)	0.6927 TFLOPS	0.8632 TFLOPS+25%
ROPs	16+100%	8
TMUs	32+100%	16
L1 Cache	32 KB	128 KB+300%
L2 Cache	0.25 MB	1 MB+300%

✨

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 Quadro K620M relies on FSR (FidelityFX Super Resolution), which is capable but generally slightly noisier than DLSS in motion.

Feature	GeForce GT 640	Quadro K620M
Upscaling Tech	Upscaling support	Upscaling support
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	Standard

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Video Memory (VRAM)

Both cards feature 4 GB of GDDR5. Bus width: 128-bit vs 64-bit. L2 Cache: 0.25 MB (GeForce GT 640) vs 1 MB (Quadro K620M) — the Quadro K620M has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GT 640	Quadro K620M
VRAM Capacity	4 GB	4 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit
L2 Cache	0.25 MB	1 MB+300%

🔌

Power & Dimensions

The GeForce GT 640 draws 65W versus the Quadro K620M's 30W — a 73.7% difference. The Quadro K620M is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 350W (Quadro K620M). Power connectors: None vs PCIe-powered.