GeForce 8500 GT vs Radeon R9 M390X

Intro

Compare all of that to the Radeon R9 M390X, which features clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
Radeon R9 M390X		125 Watts
	Difference: 80 Watts (178%)

Memory Bandwidth

The Radeon R9 M390X should theoretically be quite a bit faster than the GeForce 8500 GT in general. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 147200 (1150%)

Texel Rate

The Radeon R9 M390X will be a lot (about 2471%) faster with regards to AF than the GeForce 8500 GT. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 88944 (2471%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M390X is the winner, and very much so. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 21336 (1185%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant 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.