GeForce 9800 GTX vs Radeon HD 7750

Intro

Compare all that to the Radeon HD 7750, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM runs at a speed of 1125 MHz on this specific card. It features 512 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce 9800 GTX		140 Watts
	Difference: 85 Watts (155%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7750 should be a small 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 is a lot (approximately 69%) faster with regards to texture filtering than the Radeon HD 7750. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 17600 (69%)

Pixel Rate

The Radeon HD 7750 is a small bit (more or less 19%) faster with regards to AA than the GeForce 9800 GTX, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 2000 (19%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's 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 of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.