GeForce GTS 450 1GB vs Radeon R9 M385X

Intro

Compare those specifications to the Radeon R9 M385X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a speed of 1500 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M385X should in theory be quite a bit superior to the GeForce GTS 450 1GB in general. (explain)

Radeon R9 M385X		96000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 38272 (66%)

Texel Rate

The Radeon R9 M385X is much (more or less 146%) better at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 36544 (146%)

Pixel Rate

The Radeon R9 M385X should be a lot (approximately 40%) faster with regards to anti-aliasing than the GeForce GTS 450 1GB, and will be capable of handling higher screen resolutions better. (explain)

Radeon R9 M385X		17600 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 5072 (40%)

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 megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.