GeForce 9500 GT 512MB GDDR3 vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which has a clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3		50 Watts
Radeon R9 M390X		125 Watts
	Difference: 75 Watts (150%)

Memory Bandwidth

In theory, the Radeon R9 M390X should be 525% faster than the GeForce 9500 GT 512MB GDDR3 in general, due to its greater bandwidth. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 9500 GT 512MB GDDR3		25600 MB/sec
	Difference: 134400 (525%)

Texel Rate

The Radeon R9 M390X should be a lot (approximately 952%) better at anisotropic filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
	Difference: 83744 (952%)

Pixel Rate

The Radeon R9 M390X will be a lot (about 426%) better at full screen anti-aliasing than the GeForce 9500 GT 512MB GDDR3, and capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
	Difference: 18736 (426%)

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 max amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.