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GeForce 9800 GTX vs Radeon R9 M275X

Intro

The GeForce 9800 GTX makes use of a 65 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR3 RAM runs at a frequency of 1100 MHz on this particular card. It features 128 SPUs along with 64 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 frequency at 900 MHz. The GDDR5 memory works at a speed of 1125 MHz on this specific card. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X 50 Watts
GeForce 9800 GTX 140 Watts
Difference: 90 Watts (180%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M275X should in theory be just a bit superior to the GeForce 9800 GTX overall. (explain)

Radeon R9 M275X 72000 MB/sec
GeForce 9800 GTX 70400 MB/sec
Difference: 1600 (2%)

Texel Rate

The GeForce 9800 GTX will be a small bit (approximately 20%) better at AF than the Radeon R9 M275X. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon R9 M275X 36000 Mtexels/sec
Difference: 7200 (20%)

Pixel Rate

The Radeon R9 M275X will be a lot (more or less 33%) better at AA than the GeForce 9800 GTX, and should be capable of handling higher screen resolutions better. (explain)

Radeon R9 M275X 14400 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 3600 (33%)

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 9800 GTX

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 9800 GTX Radeon R9 M275X
Manufacturer nVidia AMD
Year April 2008 May 1 2014
Code Name G92 Venus XTX
Memory 512 MB 2048 MB
Core Speed 675 MHz 900 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 140 watts 50 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 43200 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 128 640
Texture Mapping Units 64 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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 applied per second. This number is worked out 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GTX

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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