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Geforce GTX 690 vs Radeon R9 270

Intro

The Geforce GTX 690 comes with a core clock frequency of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Compare those specifications to the Radeon R9 270, which has core clock speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units and 32 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

Geforce GTX 690 13111 points
Radeon R9 270 5943 points
Difference: 7168 (121%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Geforce GTX 690 300 Watts
Difference: 150 Watts (100%)

Memory Bandwidth

The Geforce GTX 690 should theoretically perform quite a bit faster than the Radeon R9 270 overall. (explain)

Geforce GTX 690 384512 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 205312 (115%)

Texel Rate

The Geforce GTX 690 will be much (more or less 225%) faster with regards to anisotropic filtering than the Radeon R9 270. (explain)

Geforce GTX 690 234240 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 162240 (225%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 690 is a better choice, by a large margin. (explain)

Geforce GTX 690 58560 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 29760 (103%)

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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Geforce GTX 690

Amazon.com

Check prices at:

Radeon R9 270

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 Geforce GTX 690 Radeon R9 270
Manufacturer nVidia AMD
Year April 2012 November 2013
Code Name GK104 Curacao Pro
Memory 2048 MB (x2) 2048 MB
Core Speed 915 MHz (x2) 900 MHz
Memory Speed 6008 MHz (x2) 5600 MHz
Power (Max TDP) 300 watts 150 watts
Bandwidth 384512 MB/sec 179200 MB/sec
Texel Rate 234240 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 58560 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1536 (x2) 1280
Texture Mapping Units 128 (x2) 80
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core clock 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 most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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 ability to reach the maximum fill rate.

Display Prices

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Geforce GTX 690

Amazon.com

Check prices at:

Radeon R9 270

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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