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GeForce 8800 GT 512MB vs Radeon R9 M275X

Intro

The GeForce 8800 GT 512MB makes use of a 65 nm design. nVidia has set the core speed at 600 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this model. It features 112 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M275X, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory works at a speed of 1125 MHz on this specific model. It features 640 SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X 50 Watts
GeForce 8800 GT 512MB 105 Watts
Difference: 55 Watts (110%)

Memory Bandwidth

The Radeon R9 M275X should theoretically perform quite a bit faster than the GeForce 8800 GT 512MB in general. (explain)

Radeon R9 M275X 72000 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 14400 (25%)

Texel Rate

The Radeon R9 M275X should be just a bit (more or less 7%) faster with regards to anisotropic filtering than the GeForce 8800 GT 512MB. (explain)

Radeon R9 M275X 36000 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 2400 (7%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M275X is the winner, by far. (explain)

Radeon R9 M275X 14400 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 4800 (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 GT 512MB

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 GT 512MB Radeon R9 M275X
Manufacturer nVidia AMD
Year Oct 2007 May 1 2014
Code Name G92 Venus XTX
Memory 512 MB 2048 MB
Core Speed 600 MHz 900 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 105 watts 50 watts
Bandwidth 57600 MB/sec 72000 MB/sec
Texel Rate 33600 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 112 640
Texture Mapping Units 56 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 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 largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 512MB

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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