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GeForce GTX 470 vs Radeon HD 6990

Intro

The GeForce GTX 470 comes with a clock frequency of 607 MHz and a GDDR5 memory speed of 837 MHz. It also features a 320-bit memory bus, and makes use of a 40 nm design. It is comprised of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

Compare those specifications to the Radeon HD 6990, which features a GPU core clock speed of 830 MHz, and 2048 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

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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 470 2937 points
Difference: 2883 (98%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 470 215 Watts
Radeon HD 6990 375 Watts
Difference: 160 Watts (74%)

Memory Bandwidth

The Radeon HD 6990, in theory, should be a lot faster than the GeForce GTX 470 in general. (explain)

Radeon HD 6990 320000 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 186080 (139%)

Texel Rate

The Radeon HD 6990 should be quite a bit (about 369%) better at AF than the GeForce GTX 470. (explain)

Radeon HD 6990 159360 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 125368 (369%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6990 is a better choice, and very much so. (explain)

Radeon HD 6990 53120 Mpixels/sec
GeForce GTX 470 24280 Mpixels/sec
Difference: 28840 (119%)

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 470

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 470 Radeon HD 6990
Manufacturer nVidia AMD
Year March 2010 March 2011
Code Name GF100 Antilles
Memory 1280 MB 2048 MB (x2)
Core Speed 607 MHz 830 MHz (x2)
Memory Speed 3348 MHz 5000 MHz (x2)
Power (Max TDP) 215 watts 375 watts
Bandwidth 133920 MB/sec 320000 MB/sec
Texel Rate 33992 Mtexels/sec 159360 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 53120 Mpixels/sec
Unified Shaders 448 1536 (x2)
Texture Mapping Units 56 96 (x2)
Render Output Units 40 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 320-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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 470

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.

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