GeForce GTX 950 vs Radeon HD 4750

Intro

Compare that to the Radeon HD 4750, which has clock speeds of 730 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 950		90 Watts
	Difference: 15 Watts (20%)

Memory Bandwidth

The GeForce GTX 950 should in theory perform quite a bit faster than the Radeon HD 4750 overall. (explain)

GeForce GTX 950		105728 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 54528 (107%)

Texel Rate

The GeForce GTX 950 should be quite a bit (more or less 110%) faster with regards to AF than the Radeon HD 4750. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 25792 (110%)

Pixel Rate

The GeForce GTX 950 is quite a bit (approximately 181%) better at FSAA than the Radeon HD 4750, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 21088 (181%)

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 maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the 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 card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to reach the max fill rate.