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GeForce GTX 480 vs Radeon HD 6990

Intro

The GeForce GTX 480 uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR5 memory works at a speed of 924 MHz on this card. It features 480 SPUs as well as 60 TAUs and 48 ROPs.

Compare all that to the Radeon HD 6990, which has a GPU core clock speed of 830 MHz, and 2048 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 96 Texture Address Units, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6990 5820 points
GeForce GTX 480 3650 points
Difference: 2170 (59%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 480 250 Watts
Radeon HD 6990 375 Watts
Difference: 125 Watts (50%)

Memory Bandwidth

In theory, the Radeon HD 6990 is 80% quicker than the GeForce GTX 480 overall, because of its greater data rate. (explain)

Radeon HD 6990 320000 MB/sec
GeForce GTX 480 177408 MB/sec
Difference: 142592 (80%)

Texel Rate

The Radeon HD 6990 will be a lot (more or less 279%) better at anisotropic filtering than the GeForce GTX 480. (explain)

Radeon HD 6990 159360 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 117360 (279%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6990 is the winner, by a large margin. (explain)

Radeon HD 6990 53120 Mpixels/sec
GeForce GTX 480 33600 Mpixels/sec
Difference: 19520 (58%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 480

Amazon.com

Check prices at:

Radeon HD 6990

Amazon.com

Check prices at:

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

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Model GeForce GTX 480 Radeon HD 6990
Manufacturer nVidia AMD
Year March 2010 March 2011
Code Name GF100 Antilles
Memory 1536 MB 2048 MB (x2)
Core Speed 700 MHz 830 MHz (x2)
Memory Speed 3696 MHz 5000 MHz (x2)
Power (Max TDP) 250 watts 375 watts
Bandwidth 177408 MB/sec 320000 MB/sec
Texel Rate 42000 Mtexels/sec 159360 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 53120 Mpixels/sec
Unified Shaders 480 1536 (x2)
Texture Mapping Units 60 96 (x2)
Render Output Units 48 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit (x2)
Fab Process 40 nm 40 nm
Transistors 3000 million 2640 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

Display Prices

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GeForce GTX 480

Amazon.com

Check prices at:

Radeon HD 6990

Amazon.com

Check prices at:

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.

Comments

2 Responses to “GeForce GTX 480 vs Radeon HD 6990”
Nieuwe Gaming PC bij Alternate - 9lives - Games Forum says:

[...] [...]

Matheus says:

Eu prefiro muito mais essa 6990 doque a nova HD 7970 ela é muito mais rapida, e fora que a GTX 480 em FPS é melhor doque a HD 7970 q ja foi considerada a placa de video mais rapida do mundo, uma vergonha essa HD 6990 arranca FPS extremos...

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