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GeForce GTX 650 vs Radeon HD 5870

Intro

The GeForce GTX 650 features a clock frequency of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 32 TAUs, and 16 ROPs.

Compare all of that to the Radeon HD 5870, which comes with a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 memory running at 1200 MHz through a 256-bit bus. It also features 1600(320x5) Stream Processors, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
Radeon HD 5870 188 Watts
Difference: 124 Watts (194%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5870 should theoretically be much better than the GeForce GTX 650 in general. (explain)

Radeon HD 5870 153600 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 73600 (92%)

Texel Rate

The Radeon HD 5870 should be much (more or less 101%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

Radeon HD 5870 68000 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 34144 (101%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5870 is superior to the GeForce GTX 650, and very much so. (explain)

Radeon HD 5870 27200 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 10272 (61%)

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

Radeon HD 5870

Amazon.com

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 HD 5870
Manufacturer nVidia AMD
Year September 2012 September 23, 2009
Code Name GK107 Cypress XT
Memory 1024 MB 1024 MB
Core Speed 1058 MHz 850 MHz
Memory Speed 5000 MHz 4800 MHz
Power (Max TDP) 64 watts 188 watts
Bandwidth 80000 MB/sec 153600 MB/sec
Texel Rate 33856 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 384 1600(320x5)
Texture Mapping Units 32 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 per second. This number 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 video 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 number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Comments

2 Responses to “GeForce GTX 650 vs Radeon HD 5870”
Søren says:

Why is your GTX 650 listed as having 2048mb GDDR5 rams when it only has 1024? that makes no sense to me and this is the only place i've found that suggesd this.

MikEms says:

You are correct, slight oversight, will be fixed.
There actually are 2GB versions available.
http://www.gainward.com/main/vgapro.php?id=894&lang=en
https://www.amazon.com/PNY-GeForce-GTX650-VCGGTX650XPB-Graphic/dp/B009T0FDR2

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