Radeon HD 5830 vs Radeon R7 250

Intro

Compare that to the Radeon R7 250, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1150 MHz on this particular card. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon HD 5830		175 Watts
	Difference: 110 Watts (169%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should perform a lot faster than the Radeon R7 250 overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 54400 (74%)

Texel Rate

The Radeon HD 5830 is a lot (more or less 87%) more effective at anisotropic filtering than the Radeon R7 250. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 20800 (87%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5830 is superior to the Radeon R7 250, by a large margin. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 4800 (60%)

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 (in units of megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.