GeForce GTS 450 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which makes use of a 28 nm design. AMD has set the core speed at 575 MHz. The GDDR5 memory works at a speed of 1125 MHz on this specific card. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M265X should in theory perform much faster than the GeForce GTS 450 in general. (explain)

Radeon R9 M265X		72000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 14272 (25%)

Texel Rate

The GeForce GTS 450 should be a bit (more or less 9%) more effective at AF than the Radeon R9 M265X. (explain)

GeForce GTS 450		25056 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 2056 (9%)

Pixel Rate

The GeForce GTS 450 should be quite a bit (more or less 36%) faster with regards to AA than the Radeon R9 M265X, and should be able to handle higher resolutions while still performing well. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 3328 (36%)

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 moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.