GeForce GTX 465 vs Radeon HD 5770

Intro

Compare that to the Radeon HD 5770, which features GPU clock speed of 850 MHz, and 1024 MB of GDDR5 memory running at 1200 MHz through a 128-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 465		200 Watts
	Difference: 92 Watts (85%)

Memory Bandwidth

In theory, the GeForce GTX 465 should perform quite a bit faster than the Radeon HD 5770 overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 25792 (34%)

Texel Rate

The Radeon HD 5770 should be much (more or less 27%) more effective at AF than the GeForce GTX 465. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 7292 (27%)

Pixel Rate

The GeForce GTX 465 will be quite a bit (about 43%) more effective at anti-aliasing than the Radeon HD 5770, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 5824 (43%)

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 information (measured in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.