GeForce GTX 580M SLI vs Radeon R6 M340DX

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 580M SLI vs Radeon R6 M340DX 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 580M SLI vs Radeon R6 M340DX: 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 580M SLI

2011

Why buy it

✅134.9% more average FPS across 50 tracked games in our benchmark data.

Trade-offs

❌2011 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌233.3% higher power demand at 100W vs 30W.

Radeon R6 M340DX

2015

Why buy it

✅Draws 30W instead of 100W, a 70W reduction.
✅More future proof: GCN 1.0 (2012−2020) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than GeForce GTX 580M SLI across 50 tracked games in our benchmark data.
❌2015 hardware with 512 MB 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?

GeForce GTX 580M SLI is the faster gaming card right now. In our data, it leads by 134.9% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward Radeon R6 M340DX instead at 1,800 vs 1,771, 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 GTX 580M SLI 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?

Radeon R6 M340DX 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, Radeon R6 M340DX is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce GTX 580M SLI has the stronger long-term case.

GeForce GTX 580M SLI vs Radeon R6 M340DX Technical Specifications

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

GeForce GTX 580M SLI

The GeForce GTX 580M SLI is manufactured by NVIDIA. It was released in January 6 2011. It features the Fermi architecture. The core clock speed is 620 MHz. It has 768 shading units. The thermal design power (TDP) is 100W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,771 points.

Radeon R6 M340DX

The Radeon R6 M340DX is manufactured by AMD. It was released in December 12 2015. It features the GCN 1.0 architecture. The core clock ranges from 955 MHz to 1030 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,800 points.

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Graphics Performance

The GeForce GTX 580M SLI scores 1,771 and the Radeon R6 M340DX reaches 1,800 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The GeForce GTX 580M SLI is built on Fermi while the Radeon R6 M340DX uses GCN 1.0, both on 40 nm vs 28 nm. Shader units: 768 (GeForce GTX 580M SLI) vs 384 (Radeon R6 M340DX).

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
G3D Mark Score	1,771	1,800+2%
Architecture	Fermi	GCN 1.0
Process Node	40 nm	28 nm
Shading Units	768+100%	384

✨

Advanced Features (DLSS/FSR)

The GeForce GTX 580M SLI gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon R6 M340DX leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
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)

Both cards ship with 512 MB of GDDR5. Memory bus width is 128-bit on the GeForce GTX 580M SLI and 64-bit on the Radeon R6 M340DX.

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
VRAM Capacity	0.5 GB	0.5 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit

🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce GTX 580M SLI) vs 12_0 (Radeon R6 M340DX). Maximum simultaneous displays: 2 vs 0.

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
DirectX	12 (11_0)	12_0
Max Displays	2	0

🎬

Media & Encoding

Hardware encoder: PureVideo HD VP4 (GeForce GTX 580M SLI) vs VCE 2.0 (Radeon R6 M340DX). Decoder: PureVideo HD VP4 vs UVD 4.2.

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
Encoder	PureVideo HD VP4	VCE 2.0
Decoder	PureVideo HD VP4	UVD 4.2
Codecs	H.264,VC-1,MPEG-2,MPEG-4 ASP	—

🔌

Power & Dimensions

The GeForce GTX 580M SLI draws 100W versus the Radeon R6 M340DX's 30W — a 107.7% difference. The Radeon R6 M340DX is more power-efficient. Recommended PSU: 350W (GeForce GTX 580M SLI) vs 350W (Radeon R6 M340DX). Power connectors: 1x 6-pin vs PCIe-powered.

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
TDP	100W	30W-70%
Recommended PSU	350W	350W
Power Connector	1x 6-pin	PCIe-powered
Length	—	1mm
Slots	0	0
Temp (Load)	90°C	—
Perf/Watt	17.7	60.0+239%

💰

Value Analysis

The newer card here is Radeon R6 M340DX (2015 vs 2011).

Feature	GeForce GTX 580M SLI	Radeon R6 M340DX
MSRP	—	$0
Codename	N12E-GTX2	Jet
Release	January 6 2011	December 12 2015
Ranking	#509	#852

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