GeForce GTX 275 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 275		219 Watts
	Difference: 94 Watts (75%)

Memory Bandwidth

The Radeon R9 M395X should in theory perform a lot faster than the GeForce GTX 275 overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 32992 (26%)

Texel Rate

The Radeon R9 M395X is a lot (more or less 83%) more effective at AF than the GeForce GTX 275. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 41904 (83%)

Pixel Rate

The Radeon R9 M395X will be a lot (approximately 31%) faster with regards to anti-aliasing than the GeForce GTX 275, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 5412 (31%)

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 largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the 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 can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.