GeForce GTS 450 vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which comes with a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also features 2816 SPUs, 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 GTS 450		1453 points
	Difference: 12102 (833%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 169 Watts (159%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform much faster than the GeForce GTS 450 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 326272 (565%)

Texel Rate

The Radeon R9 390X 8G is quite a bit (approximately 638%) more effective at texture filtering than the GeForce GTS 450. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 159744 (638%)

Pixel Rate

The Radeon R9 390X 8G will be much (more or less 436%) better at FSAA than the GeForce GTS 450, and will be able to handle higher screen resolutions better. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 54672 (436%)

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 (in units of 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 its memory speed. If the card has DDR type memory, it 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 most pixels that the graphics card can possibly record to its 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 core 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 rate is also dependant on quite a few 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.