Radeon HD 4750 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features core speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
Radeon R9 M295X		125 Watts
	Difference: 50 Watts (67%)

Memory Bandwidth

In theory, the Radeon R9 M295X will be 244% quicker than the Radeon HD 4750 overall, due to its greater data rate. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 124800 (244%)

Texel Rate

The Radeon R9 M295X is a lot (approximately 311%) better at texture filtering than the Radeon HD 4750. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 72640 (311%)

Pixel Rate

The Radeon R9 M295X is a lot (about 105%) faster with regards to anti-aliasing than the Radeon HD 4750, and will be able to handle higher resolutions more effectively. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 12320 (105%)

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 is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.