GeForce GT 645M vs Radeon HD 6750M

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 Radeon HD 6750M 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 Radeon HD 6750M: 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

✅100% more VRAM for high-resolution textures and newer games (2 GB vs 1 GB).
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than Radeon HD 6750M across 50 tracked games in our benchmark data.
❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon HD 6750M

2011

Why buy it

✅3.8% more average FPS across 50 tracked games in our benchmark data.

Trade-offs

❌Less VRAM, with 1 GB vs 2 GB for high-resolution textures and newer games.
❌2011 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 6750M is the faster gaming card right now. In our data, it leads by 3.8% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward GeForce GT 645M instead at 945 vs 937, 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 645M is the safer long-term pick for 2026 and beyond. The case is simple: 2 GB vs 1 GB of VRAM, a 28nm process instead of 40nm, and a newer 2012 generation instead of 2011. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

GeForce GT 645M makes the most sense today based on the pricing and value data we have for this matchup. Radeon HD 6750M still makes more sense if max raw gaming performance matters more than value.

GeForce GT 645M vs Radeon HD 6750M 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.

Radeon HD 6750M

The Radeon HD 6750M is manufactured by AMD. It was released in January 4 2011. It features the TeraScale 2 architecture. The core clock speed is 600 MHz. It has 480 shading units. The thermal design power (TDP) is 35W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 937 points.

⚡

Graphics Performance

The GeForce GT 645M scores 945 and the Radeon HD 6750M reaches 937 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The GeForce GT 645M is built on Kepler while the Radeon HD 6750M uses TeraScale 2, both on 28 nm vs 40 nm. Shader units: 384 (GeForce GT 645M) vs 480 (Radeon HD 6750M). Raw compute: 0.5445 TFLOPS (GeForce GT 645M) vs 0.576 TFLOPS (Radeon HD 6750M).

Feature	GeForce GT 645M	Radeon HD 6750M
G3D Mark Score	945	937
Architecture	Kepler	TeraScale 2
Process Node	28 nm	40 nm
Shading Units	384	480+25%
Compute (TFLOPS)	0.5445 TFLOPS	0.576 TFLOPS+6%
ROPs	16+100%	8
TMUs	32+33%	24
L1 Cache	32 KB	48 KB+50%
L2 Cache	256 KB	256 KB

✨

Advanced Features (DLSS/FSR)

The GeForce GT 645M gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon HD 6750M leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GT 645M	Radeon HD 6750M
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	AMD Anti-Lag

💾

Video Memory (VRAM)

The GeForce GT 645M has 2 GB of VRAM, while the Radeon HD 6750M carries 1 GB. GeForce GT 645M gives you 100% 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 System on the Radeon HD 6750M.

Feature	GeForce GT 645M	Radeon HD 6750M
VRAM Capacity	2 GB+100%	1 GB
Memory Type	GDDR5	Shared
Memory Bandwidth	Unknown	System
Bus Width	128-bit	System
L2 Cache	256 KB	256 KB

🔌

Power & Dimensions

The GeForce GT 645M draws 32W versus the Radeon HD 6750M's 35W — a 9% difference. The GeForce GT 645M is more power-efficient. Recommended PSU: 350W (GeForce GT 645M) vs 350W (Radeon HD 6750M). Power connectors: PCIe-powered vs 1x 6-pin.