GeForce GT 645M vs GRID K220Q

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 645M vs GRID K220Q 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 645M vs GRID K220Q: 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 645M

2012

Why buy it

✅300% more VRAM for high-resolution textures and newer games (2 GB vs 512 MB).
✅Draws 32W instead of 225W, a 193W reduction.

Trade-offs

❌2012 hardware with 2 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 1.9 G3D/$ (Unknown MSRP vs $469 MSRP).

GRID K220Q

2014

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 1.9 vs 0 G3D/$ ($469 MSRP vs Unknown MSRP).

Trade-offs

❌Less VRAM, with 512 MB vs 2 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.
❌603.1% higher power demand at 225W vs 32W.

Quick Answers

Which GPU is faster for gaming right now?

GeForce GT 645M is the faster gaming card right now based on the synthetic data we have. It leads by 3.6% in PassMark G3D (945 vs 912), which is the best performance signal available in this matchup.

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

GeForce GT 645M is the safer long-term pick for 2026 and beyond. The case is simple: 2 GB vs 512 MB of VRAM. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

GRID K220Q makes the most sense today based on the pricing and value data we have for this matchup. If you are mainly targeting 1080p and some 1440p, GRID K220Q is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce GT 645M has the stronger long-term case.

GeForce GT 645M vs GRID K220Q Technical Specifications

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

GeForce GT 645M

The GeForce GT 645M is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 945 points.

GRID K220Q

The GRID K220Q is manufactured by NVIDIA. It was released in July 2 2014. It features the Kepler architecture. The core clock speed is 745 MHz. It has 1536 shading units. The thermal design power (TDP) is 225W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 912 points. Launch price was $469.

⚡

Graphics Performance

The GeForce GT 645M scores 945 and the GRID K220Q reaches 912 in the G3D Mark benchmark — just a 3.6% difference, making them near-identical in rasterization performance. The GeForce GT 645M is built on Kepler while the GRID K220Q uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 645M) vs 1,536 (GRID K220Q). Raw compute: 0.5445 TFLOPS (GeForce GT 645M) vs 2.289 TFLOPS (GRID K220Q).

Feature	GeForce GT 645M	GRID K220Q
G3D Mark Score	945+4%	912
Architecture	Kepler	Kepler
Process Node	28 nm	28 nm
Shading Units	384	1536+300%
Compute (TFLOPS)	0.5445 TFLOPS	2.289 TFLOPS+320%
ROPs	16	32+100%
TMUs	32	128+300%
L1 Cache	32 KB	128 KB+300%
L2 Cache	256 KB	512 KB+100%

✨

Advanced Features (DLSS/FSR)

The GeForce GT 645M gets NVIDIA DLSS, which still tends to look cleaner in motion. The GRID K220Q leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GT 645M	GRID K220Q
Upscaling Tech	Upscaling support	Upscaling support
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	Standard

💾

Video Memory (VRAM)

The GeForce GT 645M has 2 GB of VRAM, while the GRID K220Q carries 512 MB. GeForce GT 645M gives you 300% 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 GT 645M and 64-bit on the GRID K220Q. L2 Cache: 256 KB (GeForce GT 645M) vs 512 KB (GRID K220Q) — the GRID K220Q has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GT 645M	GRID K220Q
VRAM Capacity	2 GB+300%	0.5 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit
L2 Cache	256 KB	512 KB+100%

🖥️

Display & API Support

DirectX support: 11.0 (GeForce GT 645M) vs 11_0 (GRID K220Q). Maximum simultaneous displays: 1 vs 2.

Feature	GeForce GT 645M	GRID K220Q
DirectX	11.0	11_0
Max Displays	1	2+100%

🔌

Power & Dimensions

The GeForce GT 645M draws 32W versus the GRID K220Q's 225W — a 150.2% difference. The GeForce GT 645M is more power-efficient. Recommended PSU: 350W (GeForce GT 645M) vs 350W (GRID K220Q). Power connectors: PCIe-powered vs PCIe-powered. Card length: 0mm vs 265mm, occupying 0 vs 2 slots.

Feature	GeForce GT 645M	GRID K220Q
TDP	32W-86%	225W
Recommended PSU	350W	350W
Power Connector	PCIe-powered	PCIe-powered
Length	0mm	265mm
Height	0mm	—
Slots	0-100%	2
Temp (Load)	70°C	—
Perf/Watt	29.5+620%	4.1

💰

Value Analysis

The newer card here is GRID K220Q (2014 vs 2012).

Feature	GeForce GT 645M	GRID K220Q
MSRP	—	$469
Codename	GK107	GK104
Release	October 1 2012	July 2 2014
Ranking	#903	#907

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