GeForce GTX 580 3GB vs Radeon HD 7750

Intro

Compare all that to the Radeon HD 7750, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM runs at a frequency of 1125 MHz on this model. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 189 Watts (344%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should in theory be a lot superior to the Radeon HD 7750 overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 120384 (167%)

Texel Rate

The GeForce GTX 580 3GB will be a lot (approximately 93%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 23808 (93%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 580 3GB is superior to the Radeon HD 7750, and very much so. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 24256 (190%)

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 maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, 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 most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.