GeForce GTX 970 vs Radeon HD 5570

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 970		145 Watts
	Difference: 102 Watts (237%)

Memory Bandwidth

In theory, the GeForce GTX 970 will be 678% faster than the Radeon HD 5570 overall, due to its greater bandwidth. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 195200 (678%)

Texel Rate

The GeForce GTX 970 will be quite a bit (approximately 740%) more effective at anisotropic filtering than the Radeon HD 5570. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 96200 (740%)

Pixel Rate

The GeForce GTX 970 will be quite a bit (approximately 1192%) faster with regards to FSAA than the Radeon HD 5570, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 62000 (1192%)

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 (in units of MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.