GeForce GT 450 (OEM) vs Radeon R9 280X

Intro

Compare that to the Radeon R9 280X, which has a clock frequency of 850 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 384-bit bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 280X		250 Watts
	Difference: 144 Watts (136%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280X should theoretically be much better than the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 192000 (200%)

Texel Rate

The Radeon R9 280X is much (more or less 474%) better at AF than the GeForce GT 450 (OEM). (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 89840 (474%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 280X is superior to the GeForce GT 450 (OEM), and very much so. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 8240 (43%)

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 megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, 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 worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at 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 write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends 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 max fill rate.