Radeon HD 5830 vs Radeon R7 250X

Intro

Compare those specs to the Radeon R7 250X, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory works at a speed of 1125 MHz on this particular model. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon HD 5830		175 Watts
	Difference: 80 Watts (84%)

Memory Bandwidth

In theory, the Radeon HD 5830 should perform a lot faster than the Radeon R7 250X in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The Radeon HD 5830 will be a small bit (more or less 12%) better at AF than the Radeon R7 250X. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 4800 (12%)

Pixel Rate

The Radeon R7 250X should be a lot (more or less 25%) better at full screen anti-aliasing than the Radeon HD 5830, and will be able to handle higher resolutions better. (explain)

Radeon R7 250X		16000 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 3200 (25%)

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 max amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.