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GeForce 9800 GTX+ vs Radeon HD 7750

Intro

The GeForce 9800 GTX+ comes with a GPU core clock speed of 738 MHz, and the 512 MB of GDDR3 memory is set to run at 1100 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon HD 7750, which features a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 90 Watts (164%)

Memory Bandwidth

The Radeon HD 7750 should theoretically perform a bit faster than the GeForce 9800 GTX+ overall. (explain)

Radeon HD 7750 72000 MB/sec
GeForce 9800 GTX+ 70400 MB/sec
Difference: 1600 (2%)

Texel Rate

The GeForce 9800 GTX+ should be a lot (about 85%) better at texture filtering than the Radeon HD 7750. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 21632 (85%)

Pixel Rate

The Radeon HD 7750 is a small bit (about 8%) more effective at full screen anti-aliasing than the GeForce 9800 GTX+, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce 9800 GTX+ 11808 Mpixels/sec
Difference: 992 (8%)

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 HD 7750

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 HD 7750
Manufacturer nVidia AMD
Year July 2008 February 2012
Code Name G92b Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 738 MHz 800 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 145 watts 55 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 47232 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 128 512
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 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 (in units of MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 9800 GTX+

Amazon.com

Check prices at:

Radeon HD 7750

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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