GeForce 8500 GT vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 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

Theoretically speaking, the Radeon R9 M390X should be 1150% quicker than the GeForce 8500 GT in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon R9 M390X will be quite a bit (more or less 2471%) more effective at anisotropic filtering than the GeForce 8500 GT. (explain)

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

Pixel Rate

The Radeon R9 M390X is a lot (approximately 1185%) better at full screen anti-aliasing than the GeForce 8500 GT, and also able to handle higher screen resolutions without slowing down too much. (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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.