Radeon HD 7950 vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which has a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit memory bus, and uses a 14 nm design. It is made up of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

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.

3DMark Fire Strike Graphics Score

Radeon HD 7950		7731 points
Radeon RX 550		3507 points
	Difference: 4224 (120%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 7950		200 Watts
	Difference: 150 Watts (300%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 should theoretically be quite a bit better than the Radeon RX 550 overall. (explain)

Radeon HD 7950		240000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 125312 (109%)

Texel Rate

The Radeon HD 7950 should be much (about 155%) better at AF than the Radeon RX 550. (explain)

Radeon HD 7950		89600 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 54400 (155%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7950 is a better choice, and very much so. (explain)

Radeon HD 7950		25600 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 8000 (45%)

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 largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.