Radeon HD 6450 (OEM) vs Radeon R9 295X2

Intro

Compare that to the Radeon R9 295X2, which has a clock speed of 1018 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 512-bit bus, and uses a 28 nm design. It is comprised of 2816 SPUs, 176 TAUs, 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

The Radeon R9 295X2 should theoretically be much faster than the Radeon HD 6450 (OEM) in general. (explain)

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

Texel Rate

The Radeon R9 295X2 is quite a bit (approximately 7067%) better at anisotropic 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 should be much (more or less 5112%) faster with regards to full screen anti-aliasing than the Radeon HD 6450 (OEM), and also capable of handling 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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.