GeForce GTS 450 vs Radeon R9 M275X

Intro

Compare those specs to the Radeon R9 M275X, which features a core clock speed of 900 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTS 450		106 Watts
	Difference: 56 Watts (112%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M275X should theoretically be quite a bit superior to the GeForce GTS 450 in general. (explain)

Radeon R9 M275X		72000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 14272 (25%)

Texel Rate

The Radeon R9 M275X should be quite a bit (about 44%) better at anisotropic filtering than the GeForce GTS 450. (explain)

Radeon R9 M275X		36000 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 10944 (44%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M275X is superior to the GeForce GTS 450, though only just barely. (explain)

Radeon R9 M275X		14400 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 1872 (15%)

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 information (measured in MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.