GeForce GTX 275 vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which comes with core speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 275 should in theory be a lot superior to the Radeon R9 M380 in general. (explain)

GeForce GTX 275		127008 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 31008 (32%)

Texel Rate

The GeForce GTX 275 will be a lot (approximately 27%) more effective at AF than the Radeon R9 M380. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 10640 (27%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 275 is the winner, not by a very large margin though. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 1724 (11%)

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

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