GeForce GTS 450 vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which comes with a GPU core clock speed of 918 MHz, and 2048 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also features 1792 SPUs, 112 TAUs, and 32 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 285		8500 points
GeForce GTS 450		1453 points
	Difference: 7047 (485%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon R9 285		190 Watts
	Difference: 84 Watts (79%)

Memory Bandwidth

As far as performance goes, the Radeon R9 285 should in theory be much better than the GeForce GTS 450 overall. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 118272 (205%)

Texel Rate

The Radeon R9 285 is a lot (about 310%) better at AF than the GeForce GTS 450. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 77760 (310%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 285 is superior to the GeForce GTS 450, by far. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 16848 (134%)

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 transported past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant 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.