GeForce GT 450 (OEM) vs Radeon R9 280X

Intro

Compare all of that to the Radeon R9 280X, which comes with a clock frequency of 850 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 384-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, 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

The Radeon R9 280X should in theory perform a lot faster than the GeForce GT 450 (OEM) in general. (explain)

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

Texel Rate

The Radeon R9 280X should be quite a bit (more or less 474%) better at anisotropic filtering 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

The Radeon R9 280X is a lot (approximately 43%) faster with regards to AA than the GeForce GT 450 (OEM), and will be capable of handling higher screen resolutions without slowing down too much. (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: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.