Join Us On Facebook

Compare any two graphics cards:
VS

GeForce GTX 480 vs Radeon HD 6850

Intro

The GeForce GTX 480 features a GPU clock speed of 700 MHz, and the 1536 MB of GDDR5 memory runs at 924 MHz through a 384-bit bus. It also is made up of 480 Stream Processors, 60 Texture Address Units, and 48 ROPs.

Compare those specs to the Radeon HD 6850, which makes use of a 40 nm design. AMD has clocked the core speed at 775 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific model. It features 960 SPUs as well as 48 Texture Address Units and 32 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 480 250 Watts
Difference: 123 Watts (97%)

Memory Bandwidth

The GeForce GTX 480, in theory, should be a lot faster than the Radeon HD 6850 in general. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 6850 128000 MB/sec
Difference: 49408 (39%)

Texel Rate

The GeForce GTX 480 should be a bit (more or less 13%) more effective at AF than the Radeon HD 6850. (explain)

GeForce GTX 480 42000 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 4800 (13%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 480 is a better choice, by far. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 6850 24800 Mpixels/sec
Difference: 8800 (35%)

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

GeForce GTX 480

Amazon.com

Radeon HD 6850

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

Model GeForce GTX 480 Radeon HD 6850
Manufacturer nVidia AMD
Year March 2010 October 2010
Code Name GF100 Barts Pro
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe x16
Memory 1536 MB 1024 MB
Core Speed 700 MHz 775 MHz
Shader Speed 1401 MHz (N/A) MHz
Memory Speed 924 MHz (3696 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 480 960
Texture Mapping Units 60 48
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 250 watts 127 watts
Shader Model 5.0 5.0
Bandwidth 177408 MB/sec 128000 MB/sec
Texel Rate 42000 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 24800 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential 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>

Spam Protection by WP-SpamFree