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GeForce GTX 650 vs Radeon R9 270X

Intro

The GeForce GTX 650 comes with a GPU core speed of 1058 MHz, and the 1024 MB of GDDR5 memory is set to run at 1250 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 32 TAUs, and 16 ROPs.

Compare all of that to the Radeon R9 270X, which features core speeds of 1000 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

Radeon R9 270X 6590 points
GeForce GTX 650 2263 points
Difference: 4327 (191%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
Radeon R9 270X 180 Watts
Difference: 116 Watts (181%)

Memory Bandwidth

The Radeon R9 270X should in theory be a lot faster than the GeForce GTX 650 in general. (explain)

Radeon R9 270X 179200 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 99200 (124%)

Texel Rate

The Radeon R9 270X will be quite a bit (about 136%) better at anisotropic filtering than the GeForce GTX 650. (explain)

Radeon R9 270X 80000 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 46144 (136%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 270X is a better choice, by a large margin. (explain)

Radeon R9 270X 32000 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 15072 (89%)

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

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GeForce GTX 650

Amazon.com

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Radeon R9 270X

Amazon.com

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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 650 Radeon R9 270X
Manufacturer nVidia AMD
Year September 2012 October 2013
Code Name GK107 Curacao XT
Memory 1024 MB 2048 MB
Core Speed 1058 MHz 1000 MHz
Memory Speed 5000 MHz 5600 MHz
Power (Max TDP) 64 watts 180 watts
Bandwidth 80000 MB/sec 179200 MB/sec
Texel Rate 33856 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 384 1280
Texture Mapping Units 32 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 1300 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends 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.

Display Prices

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GeForce GTX 650

Amazon.com

Check prices at:

Radeon R9 270X

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.

Comments

2 Responses to “GeForce GTX 650 vs Radeon R9 270X”
Joshua lee says:

OK so why does my gtx 650 by glalxy in a 4 core w/4gb ram completely smoke my phenom II 6 core w/8gb ram r9 270x gaming series machine? And I do mean completely smoke... Anyone can answer this?

Flavian Boanca says:

Josh, it all depends on what kind of game you're looking at. Knowing the specs of the 2 CPU's would actually help. If the 4-core rig's CPU is clocked higher, then that would win depending on what game you are testing out. If you're testing out MMO games or things that require CPU loadwork, a 4-core with higher clocks is better than a 6-core with lower clocks. Reason being, most games only use 2-cores max.

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