Radeon HD 7950 3GB vs Radeon RX 570

Intro

Compare those specifications to the Radeon RX 570, which has core clock speeds of 1168 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Zcash Mining Hash Rate

Radeon RX 570		298 Sol/s
Radeon HD 7950 3GB		229 Sol/s
	Difference: 69 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570		150 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the Radeon HD 7950 3GB is 5% faster than the Radeon RX 570 overall, due to its higher data rate. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 570		229376 MB/sec
	Difference: 10624 (5%)

Texel Rate

The Radeon RX 570 will be a lot (more or less 67%) faster with regards to anisotropic filtering than the Radeon HD 7950 3GB. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 59904 (67%)

Pixel Rate

The Radeon RX 570 will be quite a bit (about 46%) faster with regards to full screen anti-aliasing than the Radeon HD 7950 3GB, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 11776 (46%)

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 (measured in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.