GeForce GT 450 (OEM) vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which comes with GPU core speed of 970 MHz, and 4096 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 380X		190 Watts
	Difference: 84 Watts (79%)

Memory Bandwidth

Theoretically, the Radeon R9 380X should perform much faster than the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 86400 (90%)

Texel Rate

The Radeon R9 380X should be a lot (about 555%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 105200 (555%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 380X is a better choice, and very much so. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 12080 (64%)

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 max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the 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 can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.