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GeForce 8800 GTS (G80) 320MB vs Radeon R9 M275X

Intro

The GeForce 8800 GTS (G80) 320MB features a GPU core speed of 513 MHz, and the 320 MB of GDDR3 memory runs at 792 MHz through a 320-bit bus. It also features 96 Stream Processors, 48 TAUs, and 20 Raster Operation Units.

Compare all of that to the Radeon R9 M275X, which has a clock speed of 900 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X 50 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 93 Watts (186%)

Memory Bandwidth

The Radeon R9 M275X should in theory perform a little bit faster than the GeForce 8800 GTS (G80) 320MB overall. (explain)

Radeon R9 M275X 72000 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 8640 (14%)

Texel Rate

The Radeon R9 M275X is quite a bit (about 46%) faster with regards to texture filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon R9 M275X 36000 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 11376 (46%)

Pixel Rate

The Radeon R9 M275X will be a lot (about 40%) better at FSAA than the GeForce 8800 GTS (G80) 320MB, and capable of handling higher resolutions better. (explain)

Radeon R9 M275X 14400 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 4140 (40%)

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 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon R9 M275X

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 GTS (G80) 320MB Radeon R9 M275X
Manufacturer nVidia AMD
Year Feb 2007 May 1 2014
Code Name G80 Venus XTX
Memory 320 MB 2048 MB
Core Speed 513 MHz 900 MHz
Memory Speed 1584 MHz 4500 MHz
Power (Max TDP) 143 watts 50 watts
Bandwidth 63360 MB/sec 72000 MB/sec
Texel Rate 24624 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 96 640
Texture Mapping Units 48 40
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics 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 Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon R9 M275X

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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