GeForce GTX 275 vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which comes with GPU core speed of 970 MHz, and 4096 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380X		190 Watts
GeForce GTX 275		219 Watts
	Difference: 29 Watts (15%)

Memory Bandwidth

Performance-wise, the Radeon R9 380X should theoretically be a lot superior to the GeForce GTX 275 in general. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 55392 (44%)

Texel Rate

The Radeon R9 380X is a lot (approximately 145%) better at anisotropic filtering than the GeForce GTX 275. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 73520 (145%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380X is superior to the GeForce GTX 275, by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 13316 (75%)

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 information (measured in MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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