Join Us On Facebook

Compare any two graphics cards:
VS

Radeon HD 6670 (OEM) vs Radeon HD 6870

Intro

The Radeon HD 6670 (OEM) comes with clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 6870, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs as well as 56 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon HD 6870 151 Watts
Difference: 88 Watts (140%)

Memory Bandwidth

Performance-wise, the Radeon HD 6870 should in theory be quite a bit superior to the Radeon HD 6670 (OEM) in general. (explain)

Radeon HD 6870 134400 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 70400 (110%)

Texel Rate

The Radeon HD 6870 will be much (approximately 163%) better at texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 6870 50400 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 31200 (163%)

Pixel Rate

The Radeon HD 6870 will be a lot (more or less 350%) more effective at AA than the Radeon HD 6670 (OEM), and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 6870 28800 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 22400 (350%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Display Prices

Hide Prices

Radeon HD 6670 (OEM)

Amazon.com

Radeon HD 6870

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model Radeon HD 6670 (OEM) Radeon HD 6870
Manufacturer AMD AMD
Year February 2011 October 2010
Code Name Turks Barts XT
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe x16
Memory 512 MB 1024 MB
Core Speed 800 MHz 900 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1000 MHz (4000 MHz effective) 1050 MHz (4200 MHz effective)
Unified Shaders 480 1120
Texture Mapping Units 24 56
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 63 watts 151 watts
Shader Model 5.0 5.0
Bandwidth 64000 MB/sec 134400 MB/sec
Texel Rate 19200 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 28800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Comments

Be the first to leave a comment!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

WP-SpamFree by Pole Position Marketing