GeForce GTX 650 vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which comes with core speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs along with 176 Texture Address Units and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 390X 8G		13555 points
GeForce GTX 650		2263 points
	Difference: 11292 (499%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 211 Watts (330%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G should be 380% faster than the GeForce GTX 650 in general, due to its higher data rate. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 304000 (380%)

Texel Rate

The Radeon R9 390X 8G should be a lot (more or less 446%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 150944 (446%)

Pixel Rate

The Radeon R9 390X 8G is much (more or less 297%) faster with regards to FSAA than the GeForce GTX 650, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 50272 (297%)

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 largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.