GeForce 9800 GT 1GB vs Radeon HD 7750

Intro

Compare all of that to the Radeon HD 7750, which features a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and uses a 28 nm design. It features 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 50 Watts (91%)

Memory Bandwidth

In theory, the Radeon HD 7750 will be 25% quicker than the GeForce 9800 GT 1GB in general, due to its greater bandwidth. (explain)

Radeon HD 7750		72000 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 14400 (25%)

Texel Rate

The GeForce 9800 GT 1GB will be much (more or less 31%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 8000 (31%)

Pixel Rate

The Radeon HD 7750 should be quite a bit (more or less 33%) more effective at full screen anti-aliasing than the GeForce 9800 GT 1GB, and able to handle higher screen resolutions more effectively. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce 9800 GT 1GB		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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.