Radeon HD 6450 (OEM) 1GB vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which has a GPU core clock speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
Radeon R9 M395X		125 Watts
	Difference: 94 Watts (303%)

Memory Bandwidth

In theory, the Radeon R9 M395X should be a lot faster than the Radeon HD 6450 (OEM) 1GB overall. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 131200 (456%)

Texel Rate

The Radeon R9 M395X should be a lot (about 1442%) more effective at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 86544 (1442%)

Pixel Rate

The Radeon R9 M395X should be a lot (approximately 671%) more effective at AA than the Radeon HD 6450 (OEM) 1GB, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 20136 (671%)

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 information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.