GeForce GTX 285 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 frequency at 1100 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this card. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB will be 66% quicker than the Radeon R9 M385X in general, due to its greater data rate. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 62976 (66%)

Texel Rate

The Radeon R9 M385X should be a bit (approximately 19%) faster with regards to texture filtering than the GeForce GTX 285 1GB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 9760 (19%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 285 1GB is the winner, though not by far. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 3136 (18%)

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 (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.