Radeon HD 5770 vs Radeon R9 280X

Intro

Compare those specifications to the Radeon R9 280X, which features core clock speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon R9 280X		250 Watts
	Difference: 142 Watts (131%)

Memory Bandwidth

The Radeon R9 280X should theoretically perform a lot faster than the Radeon HD 5770 overall. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 211200 (275%)

Texel Rate

The Radeon R9 280X will be a lot (about 220%) more effective at AF than the Radeon HD 5770. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 74800 (220%)

Pixel Rate

The Radeon R9 280X is a lot (more or less 100%) faster with regards to AA than the Radeon HD 5770, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 13600 (100%)

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 data (measured in MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one 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 drawing the pixels (image) on the screen. The actual pixel 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 potential to get to the max fill rate.