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GeForce GTX 465 vs Radeon HD 6990

Intro

The GeForce GTX 465 uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 memory is set to run at a frequency of 802 MHz on this specific model. It features 352 SPUs as well as 44 TAUs and 32 Rasterization Operator Units.

Compare all of that to the Radeon HD 6990, which comes with a GPU core clock speed of 830 MHz, and 2048 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also features 1536 Stream Processors, 96 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465 200 Watts
Radeon HD 6990 375 Watts
Difference: 175 Watts (88%)

Memory Bandwidth

The Radeon HD 6990 should theoretically be quite a bit faster than the GeForce GTX 465 overall. (explain)

Radeon HD 6990 320000 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 217408 (212%)

Texel Rate

The Radeon HD 6990 should be a lot (about 497%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

Radeon HD 6990 159360 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 132652 (497%)

Pixel Rate

The Radeon HD 6990 will be a lot (about 173%) better at AA than the GeForce GTX 465, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 6990 53120 Mpixels/sec
GeForce GTX 465 19424 Mpixels/sec
Difference: 33696 (173%)

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 465

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 465 Radeon HD 6990
Manufacturer nVidia AMD
Year May 2010 March 2011
Code Name GF100 Antilles
Memory 1024 MB 2048 MB (x2)
Core Speed 607 MHz 830 MHz (x2)
Memory Speed 3208 MHz 5000 MHz (x2)
Power (Max TDP) 200 watts 375 watts
Bandwidth 102592 MB/sec 320000 MB/sec
Texel Rate 26708 Mtexels/sec 159360 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 53120 Mpixels/sec
Unified Shaders 352 1536 (x2)
Texture Mapping Units 44 96 (x2)
Render Output Units 32 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 256-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 data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, 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 figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 465

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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