GeForce GTS 450 1GB vs Radeon RX 560

Intro

Compare all that to the Radeon RX 560, which makes use of a 14 nm design. AMD has set the core speed at 1175 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this specific model. It features 1024 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 26 Watts (33%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 560 should be 99% faster than the GeForce GTS 450 1GB overall, because of its higher data rate. (explain)

Radeon RX 560		114688 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 56960 (99%)

Texel Rate

The Radeon RX 560 should be much (approximately 200%) faster with regards to anisotropic filtering than the GeForce GTS 450 1GB. (explain)

Radeon RX 560		75200 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 50144 (200%)

Pixel Rate

The Radeon RX 560 is much (about 50%) more effective at FSAA than the GeForce GTS 450 1GB, and will be able to handle higher resolutions more effectively. (explain)

Radeon RX 560		18800 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 6272 (50%)

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 (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.