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GeForce GTX 650 Ti vs Radeon HD 7850


Intro

The GeForce GTX 650 Ti features a clock frequency of 928 MHz and a GDDR5 memory speed of 1350 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 768 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the Radeon HD 7850, which has GPU core speed of 860 MHz, and 2048 MB of GDDR5 memory set to run at 1200 MHz through a 256-bit bus. It also is made up of 1024 Stream Processors, 64 TAUs, and 32 ROPs.

Display Graphs

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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 HD 7850 5200 points
GeForce GTX 650 Ti 3430 points
Difference: 1770 (52%)

Ethereum Mining Hash Rate

Radeon HD 7850 13 Mh/s
GeForce GTX 650 Ti 10 Mh/s
Difference: 3 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 110 Watts
Radeon HD 7850 130 Watts
Difference: 20 Watts (18%)

Memory Bandwidth

Theoretically, the Radeon HD 7850 should perform quite a bit faster than the GeForce GTX 650 Ti overall. (explain)

Radeon HD 7850 153600 MB/sec
GeForce GTX 650 Ti 86400 MB/sec
Difference: 67200 (78%)

Texel Rate

The GeForce GTX 650 Ti will be a small bit (approximately 8%) better at texture filtering than the Radeon HD 7850. (explain)

GeForce GTX 650 Ti 59392 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 4352 (8%)

Pixel Rate

The Radeon HD 7850 will be a lot (approximately 85%) more effective at full screen anti-aliasing than the GeForce GTX 650 Ti, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GTX 650 Ti 14848 Mpixels/sec
Difference: 12672 (85%)

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

GeForce GTX 650 Ti

Radeon HD 7850

Specifications

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Model GeForce GTX 650 Ti Radeon HD 7850
Manufacturer nVidia AMD
Year October 2012 March 2012
Code Name GK106 Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 928 MHz 860 MHz
Memory Speed 5400 MHz 4800 MHz
Power (Max TDP) 110 watts 130 watts
Bandwidth 86400 MB/sec 153600 MB/sec
Texel Rate 59392 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 768 1024
Texture Mapping Units 64 64
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

GeForce GTX 650 Ti

Radeon HD 7850

Comments

One Response to “GeForce GTX 650 Ti vs Radeon HD 7850”
Fred says:

I would like to see Game bench results. The 650Ti is one of those cards that is overlooked. Many do not realize just how good a card it is. I had a 5870 in my i5 that the fan went out on. When I purchased the 650Ti (91$ Bucks)I thought it would be a little less or the same in performance as the 5870. But it does so much better than the 5870 on my i5. I would say it will beat the 7850 too.

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