Geforce GTX 780 vs Radeon R7 250X 2GB

Intro

Compare all that to the Radeon R7 250X 2GB, which features GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Geforce GTX 780		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should perform a lot faster than the Radeon R7 250X 2GB in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The Geforce GTX 780 should be quite a bit (about 314%) more effective at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 125696 (314%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 780 is superior to the Radeon R7 250X 2GB, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 25424 (159%)

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 (counted in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write 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 core 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.