GeForce GTX 480 vs Radeon HD 5770

Intro

Compare that to the Radeon HD 5770, which uses a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this specific card. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 480		250 Watts
	Difference: 142 Watts (131%)

Memory Bandwidth

The GeForce GTX 480 should theoretically perform a lot faster than the Radeon HD 5770 overall. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 100608 (131%)

Texel Rate

The GeForce GTX 480 should be much (approximately 24%) better at anisotropic filtering than the Radeon HD 5770. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 8000 (24%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 480 is a better choice, by a large margin. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 20000 (147%)

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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.