Radeon HD 6450 (OEM) vs Radeon R9 295X2

Intro

Compare all that to the Radeon R9 295X2, which has GPU clock speed of 1018 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 512-bit bus. It also is comprised of 2816 SPUs, 176 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 295X2		21205 points
Radeon HD 6450 (OEM)		340 points
	Difference: 20865 (6137%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 295X2		500 Watts
	Difference: 469 Watts (1513%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should be 4900% faster than the Radeon HD 6450 (OEM) overall, due to its greater bandwidth. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 627200 (4900%)

Texel Rate

The Radeon R9 295X2 should be quite a bit (approximately 7067%) faster with regards to texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 353336 (7067%)

Pixel Rate

The Radeon R9 295X2 is a lot (approximately 5112%) better at FSAA than the Radeon HD 6450 (OEM), and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 127804 (5112%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 in one second. This number is worked out by multiplying the total number of texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.