Radeon HD 8670M Rev. 2 vs Radeon HD 8790M

Radeon HD 8670M Rev. 2 Memory: 1024Mb DDR3MOBILE Release date: 1 Mar 2013

Radeon HD 8790M Memory: 2048Mb GDDR5MOBILE Release date: 1 Apr 2013

You are comparing OEM or variant versions of at least one VGA. Did you mean Radeon HD 8670M vs Radeon HD 8790M instead?

Summary

Synthetic performance index

Radeon HD 8670M Rev. 2
100%
Radeon HD 8790M
139%

Relative performance

Reasons to consider Radeon HD 8670M Rev. 2

Supports Direct3D 12 Async Compute

Supports ReLive (allows game streaming/recording with minimum performance penalty)

Supports Mantle

Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Reasons to consider Radeon HD 8790M

Around 39% higher average synthetic performance.

Supports Direct3D 12 Async Compute

Supports ReLive (allows game streaming/recording with minimum performance penalty)

Supports Mantle

Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

HWBench recommends Radeon HD 8790M

The Radeon HD 8790M is the better performing card based on the synthetic benchmarks used (1 benchmarks).

Specifications

Core Configuration

	Radeon HD 8670M Rev. 2		Radeon HD 8790M
GPU Name	Mars (Mars XT)	vs	Mars (Mars XTX)
Fab Process	28 nm	vs	28 nm
Die Size	77 mmÂ²	vs	77 mmÂ²
Transistors	1,040 million	vs	1,040 million
Shaders	384	vs	384
Compute Units	6	vs	6
Core clock	775 MHz	vs	850 MHz
ROPs	8	vs	8
TMUs	24	vs	24

Memory Configuration

	Radeon HD 8670M Rev. 2		Radeon HD 8790M
Memory Type	DDR3	vs	GDDR5
Bus Width	64 bit	vs	128 bit
Memory Speed	900 MHz 1800 MHz effective	vs	1000 MHz 4000 MHz effective
Memory Size	1024 Mb	vs	2048 Mb

Additional details

	Radeon HD 8670M Rev. 2		Radeon HD 8790M
TDP	0 watts	vs	0 watts
Release Date	1 Mar 2013	vs	1 Apr 2013

Raw Performance comparison

Pixel Rate

Radeon HD 8670M Rev. 2
6.60 GP/s
Radeon HD 8790M
7.20 GP/s

GigaPixels - higher is better

Texel Rate

Radeon HD 8670M Rev. 2
19.80 GT/s
Radeon HD 8790M
21.60 GT/s

GigaTexels - higher is better

Memory bandwidth

Radeon HD 8670M Rev. 2
14.40 GB/s
Radeon HD 8790M
64.00 GB/s

GB/s - higher is better

Single precision performance

Radeon HD 8670M Rev. 2
633.60 GFLOPs
Radeon HD 8790M
691.20 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

Radeon HD 8670M Rev. 2
1530
Radeon HD 8790M
2130

Points (higher is better)

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