GeForce 9800 GTX+ vs Radeon R9 M385X

Intro

Compare those specs to the Radeon R9 M385X, which comes with a clock frequency of 1100 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X should be 36% faster than the GeForce 9800 GTX+ in general, because of its higher data rate. (explain)

Radeon R9 M385X		96000 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 25600 (36%)

Texel Rate

The Radeon R9 M385X should be a lot (approximately 30%) faster with regards to AF than the GeForce 9800 GTX+. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce 9800 GTX+		47232 Mtexels/sec
	Difference: 14368 (30%)

Pixel Rate

The Radeon R9 M385X is a lot (about 49%) better at AA than the GeForce 9800 GTX+, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M385X		17600 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 5792 (49%)

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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.