GeForce 9500 GT 1GB GDDR3 vs Radeon HD 5570

Intro

Compare all of that to the Radeon HD 5570, which has a clock frequency of 650 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 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 9500 GT 1GB GDDR3		50 Watts
	Difference: 7 Watts (16%)

Memory Bandwidth

Performance-wise, the Radeon HD 5570 should theoretically be a little bit superior to the GeForce 9500 GT 1GB GDDR3 overall. (explain)

Radeon HD 5570		28800 MB/sec
GeForce 9500 GT 1GB GDDR3		25600 MB/sec
	Difference: 3200 (13%)

Texel Rate

The Radeon HD 5570 is quite a bit (approximately 48%) faster with regards to AF than the GeForce 9500 GT 1GB GDDR3. (explain)

Radeon HD 5570		13000 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 4200 (48%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5570 is superior to the GeForce 9500 GT 1GB GDDR3, but not by far. (explain)

Radeon HD 5570		5200 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
	Difference: 800 (18%)

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 across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.