Geforce GTX 770 vs Radeon HD 5770

Intro

Compare those specifications to the Radeon HD 5770, which comes with GPU core speed of 850 MHz, and 1024 MB of GDDR5 RAM running at 1200 MHz through a 128-bit bus. It also features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Geforce GTX 770		230 Watts
	Difference: 122 Watts (113%)

Memory Bandwidth

In theory, the Geforce GTX 770 should be a lot faster than the Radeon HD 5770 in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 147584 (192%)

Texel Rate

The Geforce GTX 770 should be a lot (more or less 294%) more effective at texture filtering than the Radeon HD 5770. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 99888 (294%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 770 is superior to the Radeon HD 5770, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 19872 (146%)

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 largest amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many 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.