GeForce GTX 590 vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 590		6680 points
Radeon HD 7770		3180 points
	Difference: 3500 (110%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 590		365 Watts
	Difference: 285 Watts (356%)

Memory Bandwidth

The GeForce GTX 590 should theoretically be quite a bit faster than the Radeon HD 7770 in general. (explain)

GeForce GTX 590		328320 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 256320 (356%)

Texel Rate

The GeForce GTX 590 is quite a bit (more or less 94%) better at AF than the Radeon HD 7770. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 37696 (94%)

Pixel Rate

The GeForce GTX 590 will be a lot (more or less 264%) better at full screen anti-aliasing than the Radeon HD 7770, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 42272 (264%)

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 maximum amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.