GeForce 9800 GTX vs Radeon R9 M390X

Intro

Compare all of that to the Radeon R9 M390X, which has a clock speed of 723 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce 9800 GTX		140 Watts
	Difference: 15 Watts (12%)

Memory Bandwidth

Performance-wise, the Radeon R9 M390X should theoretically be much better than the GeForce 9800 GTX in general. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 89600 (127%)

Texel Rate

The Radeon R9 M390X should be much (approximately 114%) better at anisotropic filtering than the GeForce 9800 GTX. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 9800 GTX		43200 Mtexels/sec
	Difference: 49344 (114%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M390X is a better choice, by a large margin. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 12336 (114%)

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 data (measured in MB 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 memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.