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Geforce GTX 760 vs Radeon HD 4850 X2 512MB

Intro

The Geforce GTX 760 comes with a core clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1152 SPUs, 96 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon HD 4850 X2 512MB, which comes with a clock speed of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 760 170 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 80 Watts (47%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 760 should be 51% quicker than the Radeon HD 4850 X2 512MB in general, because of its higher bandwidth. (explain)

Geforce GTX 760 192256 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 65152 (51%)

Texel Rate

The Geforce GTX 760 is much (about 88%) more effective at texture filtering than the Radeon HD 4850 X2 512MB. (explain)

Geforce GTX 760 94080 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 44080 (88%)

Pixel Rate

The Geforce GTX 760 is a lot (about 57%) more effective at FSAA than the Radeon HD 4850 X2 512MB, and should be able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 760 31360 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 11360 (57%)

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 760

Amazon.com

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Radeon HD 4850 X2 512MB

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 760 Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year June 2013 Nov 7, 2008
Code Name GK104 R700
Memory 2048 MB 512 MB (x2)
Core Speed 980 MHz 625 MHz (x2)
Memory Speed 6008 MHz 1986 MHz (x2)
Power (Max TDP) 170 watts 250 watts
Bandwidth 192256 MB/sec 127104 MB/sec
Texel Rate 94080 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 31360 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 1152 800(160x5) (x2)
Texture Mapping Units 96 40 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 256-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 3540 million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Geforce GTX 760

Amazon.com

Check prices at:

Radeon HD 4850 X2 512MB

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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