Radeon HD 3470 256MB vs Radeon R7 250

Intro

Compare that to the Radeon R7 250, which comes with core speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R7 250, in theory, should be a lot faster than the Radeon HD 3470 256MB overall. (explain)

Radeon R7 250		73600 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 43200 (142%)

Texel Rate

The Radeon R7 250 is much (about 650%) better at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon R7 250		24000 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 20800 (650%)

Pixel Rate

The Radeon R7 250 should be much (approximately 150%) faster with regards to AA than the Radeon HD 3470 256MB, and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R7 250		8000 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 4800 (150%)

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 transported across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.