GeForce GTS 450 vs Radeon HD 5770

Intro

Compare all of that to the Radeon HD 5770, which features core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon HD 5770		108 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5770 should theoretically be quite a bit superior to the GeForce GTS 450 overall. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 19072 (33%)

Texel Rate

The Radeon HD 5770 will be a lot (approximately 36%) more effective at texture filtering than the GeForce GTS 450. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 8944 (36%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5770 is superior to the GeForce GTS 450, though not by far. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 1072 (9%)

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 maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. 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 rate is also dependant on quite a few 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.