GeForce GTS 250 1GB vs Radeon HD 6570 (OEM) 2GB

Intro

Compare all of that to the Radeon HD 6570 (OEM) 2GB, which has a core clock speed of 650 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 95 Watts (190%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 1GB should be a bit faster than the Radeon HD 6570 (OEM) 2GB overall. (explain)

GeForce GTS 250 1GB		70400 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce GTS 250 1GB should be quite a bit (about 203%) better at texture filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 31632 (203%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTS 250 1GB is superior to the Radeon HD 6570 (OEM) 2GB, by a large margin. (explain)

GeForce GTS 250 1GB		11808 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 6608 (127%)

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 data (measured in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the 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 most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of 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 output rate also depends 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 get to the max fill rate.