GeForce GTX 675MX vs Radeon HD 6990

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 GTX 675MX vs Radeon HD 6990 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 GTX 675MX vs Radeon HD 6990: 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 GTX 675MX

2012

Why buy it

✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).
✅Draws 100W instead of 375W, a 275W reduction.
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than Radeon HD 6990 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.
❌Lower G3D Mark per dollar, at 0 vs 4.3 G3D/$ (Unknown MSRP vs $699 MSRP).

Radeon HD 6990

2011

Why buy it

✅18.5% more average FPS across 50 tracked games in our benchmark data.
✅Delivers 100+% more G3D Mark for each dollar spent, at 4.3 vs 0 G3D/$ ($699 MSRP vs Unknown MSRP).
✅GeForce GTX 675MX is already obsolete for modern gaming, so Radeon HD 6990 is the less risky modern option long term.

Trade-offs

❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌2011 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌275% higher power demand at 375W vs 100W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 6990 is the faster gaming card right now. In our data, it leads by 18.5% in average FPS across 50 tracked games in our benchmark data and by 2.1% in PassMark G3D (3,014 vs 2,951), so the answer here is pretty clean.

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

Radeon HD 6990 is the safer long-term pick for 2026 and beyond. The case is simple: the newer upscaling stack, FSR Upscaling / FSR 4 (2025) instead of no meaningful modern upscaling stack. That still leaves it as the safer long-term option on hardware alone.

Which GPU is the better buy today?

Radeon HD 6990 makes the most sense today based on the pricing and value data we have for this matchup.

GeForce GTX 675MX vs Radeon HD 6990 Technical Specifications

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

GeForce GTX 675MX

The GeForce GTX 675MX is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is 600 MHz. It has 960 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,951 points.

Radeon HD 6990

The Radeon HD 6990 is manufactured by AMD. It was released in March 8 2011. It features the TeraScale 3 architecture. The core clock speed is 830 MHz. It has 1536 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 3,014 points. Launch price was $699.

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Graphics Performance

The GeForce GTX 675MX scores 2,951 and the Radeon HD 6990 reaches 3,014 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The GeForce GTX 675MX is built on Kepler while the Radeon HD 6990 uses TeraScale 3, both on 28 nm vs 40 nm. Shader units: 960 (GeForce GTX 675MX) vs 1,536 (Radeon HD 6990). Raw compute: 1.256 TFLOPS (GeForce GTX 675MX) vs 2.55 TFLOPS ×2 (Radeon HD 6990).

Feature	GeForce GTX 675MX	Radeon HD 6990
G3D Mark Score	2,951	3,014+2%
Architecture	Kepler	TeraScale 3
Process Node	28 nm	40 nm
Shading Units	960	1536 ×2+60%
Compute (TFLOPS)	1.256 TFLOPS	2.55 TFLOPS ×2+103%
ROPs	32	32 ×2
TMUs	80	96 ×2+20%
L1 Cache	80 KB	384 KB+380%
L2 Cache	512 KB	512 KB

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Advanced Features (DLSS/FSR)

The GeForce GTX 675MX gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon HD 6990 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 675MX	Radeon HD 6990
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

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Video Memory (VRAM)

The GeForce GTX 675MX has 4 GB of VRAM, while the Radeon HD 6990 carries 2 GB. GeForce GTX 675MX 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 GTX 675MX and 128-bit on the Radeon HD 6990.

Feature	GeForce GTX 675MX	Radeon HD 6990
VRAM Capacity	4 GB+100%	2 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	512 KB	512 KB

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Display & API Support

DirectX support: 12 (11_0) (GeForce GTX 675MX) vs 11.2 (Radeon HD 6990). Vulkan: 1.2 vs None. OpenGL: 4.6 vs 4.4. Maximum simultaneous displays: 4 vs 5.

Feature	GeForce GTX 675MX	Radeon HD 6990
DirectX	12 (11_0)+7%	11.2
Vulkan	1.2	None
OpenGL	4.6+5%	4.4
Max Displays	4	5+25%

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Media & Encoding

Hardware encoder: NVENC 1st Gen (GeForce GTX 675MX) vs None (Radeon HD 6990). Decoder: PureVideo HD VP5 vs UVD 3.0. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 ASP (GeForce GTX 675MX) vs H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 6990).

Feature	GeForce GTX 675MX	Radeon HD 6990
Encoder	NVENC 1st Gen	None
Decoder	PureVideo HD VP5	UVD 3.0
Codecs	H.264,VC-1,MPEG-2,MPEG-4 ASP	H.264,VC-1,MPEG-2,MPEG-4

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Power & Dimensions

The GeForce GTX 675MX draws 100W versus the Radeon HD 6990's 375W — a 115.8% difference. The GeForce GTX 675MX is more power-efficient. Recommended PSU: 350W (GeForce GTX 675MX) vs 750W (Radeon HD 6990). Power connectors: 1x 6-pin vs 2x 8-pin. Typical load temperature: 85°C vs 85.

Feature	GeForce GTX 675MX	Radeon HD 6990
TDP	100W-73%	375W
Recommended PSU	350W-53%	750W
Power Connector	1x 6-pin	2x 8-pin
Length	—	310mm
Height	—	115mm
Slots	0-100%	2
Temp (Load)	85°C	85
Perf/Watt	29.5+269%	8.0

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Value Analysis

The newer card here is GeForce GTX 675MX (2012 vs 2011).

Feature	GeForce GTX 675MX	Radeon HD 6990
MSRP	—	$699
Codename	GK104	Antilles
Release	October 1 2012	March 8 2011
Ranking	#588	#583

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