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.

GeForce GT 640 vs Quadro K620M 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 vs Quadro K620M: 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

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.
❌2012 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌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

❌2015 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌Lower G3D Mark per dollar, at 0 vs 11.8 G3D/$ (Unknown MSRP vs $99 MSRP).

Quick Answers

Which GPU is faster for gaming right now?

Quadro K620M is the faster gaming card right now. In our data, it leads by 49.4% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward GeForce GT 640 instead at 1,169 vs 1,159, so for this question the real-game FPS result matters more than the synthetic split.

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

GeForce GT 640 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?

GeForce GT 640 makes the most sense today based on the pricing and value data we have for this matchup. Quadro K620M still makes more sense if max raw gaming performance matters more than value.

GeForce GT 640 vs Quadro K620M Technical Specifications

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

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 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Quadro K620M leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

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

💾

Video Memory (VRAM)

Both cards ship with 4 GB of GDDR5. Memory bus width is 128-bit on the GeForce GT 640 and 64-bit on the Quadro K620M. 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.

Feature	GeForce GT 640	Quadro K620M
TDP	65W	30W-54%
Recommended PSU	300W-14%	350W
Power Connector	None	PCIe-powered
Length	145mm	—
Height	111mm	—
Slots	1	—
Temp (Load)	60°C	—
Perf/Watt	18.0	38.6+114%

💰

Value Analysis

The newer card here is Quadro K620M (2015 vs 2012).

Feature	GeForce GT 640	Quadro K620M
MSRP	$99	—
Codename	GK107	GM108
Release	June 5 2012	March 1 2015
Ranking	#837	#842

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