GeForce GTX 590 vs Radeon HD 7770

Intro

Compare all that to the Radeon HD 7770, which features a clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

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 a lot faster than the Radeon HD 7770 overall. (explain)

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

Texel Rate

The GeForce GTX 590 should be much (approximately 94%) more effective 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

If running with high levels of AA is important to you, then the GeForce GTX 590 is a better choice, by a large margin. (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 megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 ability to get to the maximum fill rate.