GeForce GTX 460 vs Radeon HD 7770

Intro

Compare all that to the Radeon HD 7770, which features GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

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 460		2557 points
	Difference: 623 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 460		150 Watts
	Difference: 70 Watts (88%)

Memory Bandwidth

In theory, the GeForce GTX 460 should be 20% quicker than the Radeon HD 7770 in general, because of its higher data rate. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 14400 (20%)

Texel Rate

The Radeon HD 7770 is a bit (about 6%) faster with regards to anisotropic filtering than the GeForce GTX 460. (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce GTX 460		37800 Mtexels/sec
	Difference: 2200 (6%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 is a better choice, but only just. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 200 (1%)

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 maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.