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Radeon R9 280 vs Radeon R9 295X2

Intro

The Radeon R9 280 makes use of a 28 nm design. AMD has clocked the core speed at 933 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Compare those specifications to the Radeon R9 295X2, which uses a 28 nm design. AMD has set the core frequency at 1018 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this particular card. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

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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 R9 280 7961 points
Difference: 13244 (166%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 280 250 Watts
Radeon R9 295X2 500 Watts
Difference: 250 Watts (100%)

Memory Bandwidth

As far as performance goes, the Radeon R9 295X2 should in theory be quite a bit better than the Radeon R9 280 overall. (explain)

Radeon R9 295X2 640000 MB/sec
Radeon R9 280 240000 MB/sec
Difference: 400000 (167%)

Texel Rate

The Radeon R9 295X2 is quite a bit (approximately 243%) faster with regards to AF than the Radeon R9 280. (explain)

Radeon R9 295X2 358336 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 253840 (243%)

Pixel Rate

The Radeon R9 295X2 will be quite a bit (about 336%) faster with regards to anti-aliasing than the Radeon R9 280, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 295X2 130304 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 100448 (336%)

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

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Radeon R9 280

Amazon.com

Check prices at:

Radeon R9 295X2

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 280 Radeon R9 295X2
Manufacturer AMD AMD
Year March 2014 April 2014
Code Name Tahiti Pro Vesuvius
Memory 3072 MB 4096 MB (x2)
Core Speed 933 MHz 1018 MHz (x2)
Memory Speed 5000 MHz 5000 MHz (x2)
Power (Max TDP) 250 watts 500 watts
Bandwidth 240000 MB/sec 640000 MB/sec
Texel Rate 104496 Mtexels/sec 358336 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 130304 Mpixels/sec
Unified Shaders 1792 2816 (x2)
Texture Mapping Units 112 176 (x2)
Render Output Units 32 64 (x2)
Bus Type GDDR5 GDDR5
Bus Width 384-bit 512-bit (x2)
Fab Process 28 nm 28 nm
Transistors 4313 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon R9 280

Amazon.com

Check prices at:

Radeon R9 295X2

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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