GeForce GTX 860M vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has GPU clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) Stream Processors, 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

Theoretically speaking, the GeForce GTX 860M should be 400% quicker than the Radeon HD 5450 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 860M will be quite a bit (about 1371%) faster with regards to AF 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 a high resolution is important to you, then the GeForce GTX 860M is a better choice, by far. (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: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.