Radeon HD 4750 vs Radeon R7 260X

Intro

Compare those specifications to the Radeon R7 260X, which has a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1625 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
Radeon R7 260X		115 Watts
	Difference: 40 Watts (53%)

Memory Bandwidth

Performance-wise, the Radeon R7 260X should in theory be quite a bit better than the Radeon HD 4750 in general. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 52800 (103%)

Texel Rate

The Radeon R7 260X should be much (approximately 164%) faster with regards to anisotropic filtering than the Radeon HD 4750. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 38240 (164%)

Pixel Rate

The Radeon R7 260X should be quite a bit (about 51%) better at AA than the Radeon HD 4750, and should be able to handle higher resolutions more effectively. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 5920 (51%)

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 data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 can be processed per second. This number 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.