GeForce GTX 590 vs Radeon HD 5770

Intro

Compare all that to the Radeon HD 5770, which comes with GPU clock speed of 850 MHz, and 1024 MB of GDDR5 memory running at 1200 MHz through a 128-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 590		365 Watts
	Difference: 257 Watts (238%)

Memory Bandwidth

In theory, the GeForce GTX 590 should be 328% quicker than the Radeon HD 5770 overall, because of its higher bandwidth. (explain)

GeForce GTX 590		328320 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 251520 (328%)

Texel Rate

The GeForce GTX 590 should be a lot (more or less 129%) better at AF than the Radeon HD 5770. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 43696 (129%)

Pixel Rate

The GeForce GTX 590 is quite a bit (about 328%) faster with regards to FSAA than the Radeon HD 5770, and will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 44672 (328%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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