GeForce GTX 560 vs Radeon HD 7770

Intro

Compare that to the Radeon HD 7770, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, 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

Radeon HD 7770		3180 points
GeForce GTX 560		3030 points
	Difference: 150 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 560		150 Watts
	Difference: 70 Watts (88%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 should perform a lot faster than the Radeon HD 7770 in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 56128 (78%)

Texel Rate

The GeForce GTX 560 will be just a bit (about 13%) better at texture filtering than the Radeon HD 7770. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 5360 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 560 is a better choice, and very much so. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 9920 (62%)

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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock 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 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 reach the maximum fill rate.