GeForce GTX 580 3GB vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a frequency of 1150 MHz on this particular model. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 179 Watts (275%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be 161% quicker than the Radeon R7 250 in general, because of its higher bandwidth. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 118784 (161%)

Texel Rate

The GeForce GTX 580 3GB should be a lot (more or less 106%) faster with regards to anisotropic filtering than the Radeon R7 250. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 25408 (106%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 580 3GB is the winner, by far. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 29056 (363%)

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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 applied per second. This 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.