GeForce GTX 860M vs Radeon HD 5450

Intro

Compare that to the Radeon HD 5450, which features a clock frequency of 650 MHz and a DDR3 memory frequency of 800 MHz. It also uses a 64-bit memory bus, and uses a 40 nm design. It is made up of 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 860M		45 Watts
	Difference: 26 Watts (137%)

Memory Bandwidth

The GeForce GTX 860M should in theory perform quite a bit faster than the Radeon HD 5450 overall. (explain)

GeForce GTX 860M		64000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 51200 (400%)

Texel Rate

The GeForce GTX 860M is a lot (about 1371%) better at anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 71312 (1371%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 860M is the winner, and very much so. (explain)

GeForce GTX 860M		12752 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 10152 (390%)

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 (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video 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 amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.