GeForce GT 450 (OEM) vs Radeon HD 5570

Intro

Compare that to the Radeon HD 5570, which features a clock speed of 650 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 63 Watts (147%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should theoretically be quite a bit superior to the Radeon HD 5570 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 67200 (233%)

Texel Rate

The GeForce GT 450 (OEM) will be quite a bit (more or less 46%) more effective at AF than the Radeon HD 5570. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 5960 (46%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 5570, by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 13760 (265%)

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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.