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GeForce 8800 GTX vs Radeon R9 M265X

Intro

The GeForce 8800 GTX has a GPU core speed of 575 MHz, and the 768 MB of GDDR3 memory is set to run at 900 MHz through a 384-bit bus. It also features 128 Stream Processors, 64 Texture Address Units, and 24 ROPs.

Compare that to the Radeon R9 M265X, which has a core clock frequency of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should theoretically be a bit superior to the Radeon R9 M265X overall. (explain)

GeForce 8800 GTX 86400 MB/sec
Radeon R9 M265X 72000 MB/sec
Difference: 14400 (20%)

Texel Rate

The GeForce 8800 GTX is a lot (about 60%) faster with regards to anisotropic filtering than the Radeon R9 M265X. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
Radeon R9 M265X 23000 Mtexels/sec
Difference: 13800 (60%)

Pixel Rate

The GeForce 8800 GTX will be much (approximately 50%) more effective at full screen anti-aliasing than the Radeon R9 M265X, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
Radeon R9 M265X 9200 Mpixels/sec
Difference: 4600 (50%)

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

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GeForce 8800 GTX

Amazon.com

Check prices at:

Radeon R9 M265X

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 8800 GTX Radeon R9 M265X
Manufacturer nVidia AMD
Year Nov 2006 May 1 2014
Code Name G80 Venus Pro
Memory 768 MB 2048 MB
Core Speed 575 MHz 575 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 155 watts (Unknown) watts
Bandwidth 86400 MB/sec 72000 MB/sec
Texel Rate 36800 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 128 640
Texture Mapping Units 64 40
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 applied in one second. This number is worked out by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8800 GTX

Amazon.com

Check prices at:

Radeon R9 M265X

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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