GeForce GTX 295 vs Radeon HD 5770

Intro

Compare those specifications to the Radeon HD 5770, which makes use of a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this particular card. It features 800(160x5) SPUs along with 40 Texture Address Units 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 295		289 Watts
	Difference: 181 Watts (168%)

Memory Bandwidth

The GeForce GTX 295, in theory, should be a lot faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 146976 (191%)

Texel Rate

The GeForce GTX 295 will be a lot (about 171%) faster with regards to AF than the Radeon HD 5770. (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 58160 (171%)

Pixel Rate

The GeForce GTX 295 will be much (approximately 137%) better at anti-aliasing than the Radeon HD 5770, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 18656 (137%)

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 largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.