GeForce GTX 950 vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has core clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 memory. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 950		90 Watts
	Difference: 71 Watts (374%)

Memory Bandwidth

In theory, the GeForce GTX 950 should be 726% faster than the Radeon HD 5450 overall, because of its higher data rate. (explain)

GeForce GTX 950		105728 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 92928 (726%)

Texel Rate

The GeForce GTX 950 is quite a bit (approximately 845%) more effective at anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 43952 (845%)

Pixel Rate

The GeForce GTX 950 should be much (more or less 1160%) more effective at anti-aliasing than the Radeon HD 5450, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 30168 (1160%)

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 max amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.