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GeForce 9800 GT 512MB vs Radeon HD 7750


The GeForce 9800 GT 512MB comes with clock speeds of 600 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 112 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 7750, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce 9800 GT 512MB 105 Watts
Difference: 50 Watts (91%)

Memory Bandwidth

Theoretically, the Radeon HD 7750 should be a lot faster than the GeForce 9800 GT 512MB overall. (explain)

Radeon HD 7750 72000 MB/sec
GeForce 9800 GT 512MB 57600 MB/sec
Difference: 14400 (25%)

Texel Rate

The GeForce 9800 GT 512MB is much (approximately 31%) better at texture filtering than the Radeon HD 7750. (explain)

GeForce 9800 GT 512MB 33600 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 8000 (31%)

Pixel Rate

The Radeon HD 7750 will be quite a bit (approximately 33%) more effective at full screen anti-aliasing than the GeForce 9800 GT 512MB, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce 9800 GT 512MB 9600 Mpixels/sec
Difference: 3200 (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

Display Prices

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GeForce 9800 GT 512MB

Radeon HD 7750

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.


Display Specifications

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Model GeForce 9800 GT 512MB Radeon HD 7750
Manufacturer nVidia AMD
Year July 2008 February 2012
Code Name G92a/b Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 105 watts 55 watts
Bandwidth 57600 MB/sec 72000 MB/sec
Texel Rate 33600 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 112 512
Texture Mapping Units 56 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 28 nm
Transistors 754 million 1500 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.


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