GeForce GTS 450 1GB vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM works at a frequency of 1425 MHz on this model. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
Radeon R9 380X		190 Watts
	Difference: 84 Watts (79%)

Memory Bandwidth

Performance-wise, the Radeon R9 380X should theoretically be quite a bit superior to the GeForce GTS 450 1GB overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 124672 (216%)

Texel Rate

The Radeon R9 380X should be much (approximately 396%) faster with regards to anisotropic filtering than the GeForce GTS 450 1GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 99104 (396%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 380X is the winner, and very much so. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 18512 (148%)

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 maximum amount of information (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 potential to reach the max fill rate.