GeForce GTS 450 1GB vs Radeon RX 570

Intro

Compare those specs to the Radeon RX 570, which has GPU clock speed of 1168 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
Radeon RX 570		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

Performance-wise, the Radeon RX 570 should theoretically be much better than the GeForce GTS 450 1GB in general. (explain)

Radeon RX 570		229376 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 171648 (297%)

Texel Rate

The Radeon RX 570 is quite a bit (approximately 497%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

Radeon RX 570		149504 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 124448 (497%)

Pixel Rate

The Radeon RX 570 will be much (approximately 198%) faster with regards to AA than the GeForce GTS 450 1GB, and also able to handle higher resolutions more effectively. (explain)

Radeon RX 570		37376 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 24848 (198%)

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 maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.