GeForce GTS 450 vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this specific card. It features 2560 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

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 390 8G		12733 points
GeForce GTS 450		1453 points
	Difference: 11280 (776%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon R9 390 8G should be 565% faster than the GeForce GTS 450 overall, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon R9 390 8G will be quite a bit (more or less 539%) faster with regards to AF than the GeForce GTS 450. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 134944 (539%)

Pixel Rate

The Radeon R9 390 8G is much (more or less 411%) faster with regards to FSAA than the GeForce GTS 450, and also will be capable of handling higher screen resolutions better. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 51472 (411%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.