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GeForce 8800 GTS (G92) vs Radeon HD 5770

Intro

The GeForce 8800 GTS (G92) features core speeds of 650 MHz on the GPU, and 970 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon HD 5770, which uses a 40 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 27 Watts (25%)

Memory Bandwidth

In theory, the Radeon HD 5770 should be 24% quicker than the GeForce 8800 GTS (G92) in general, because of its higher data rate. (explain)

Radeon HD 5770 76800 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 14720 (24%)

Texel Rate

The GeForce 8800 GTS (G92) will be much (about 22%) better at AF than the Radeon HD 5770. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 7600 (22%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5770 is superior to the GeForce 8800 GTS (G92), by a large margin. (explain)

Radeon HD 5770 13600 Mpixels/sec
GeForce 8800 GTS (G92) 10400 Mpixels/sec
Difference: 3200 (31%)

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 8800 GTS (G92)

Amazon.com

Radeon HD 5770

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 8800 GTS (G92) Radeon HD 5770
Manufacturer nVidia AMD
Year Dec 2007 October 13, 2009
Code Name G92 Juniper XT
Memory 512 MB 1024 MB
Core Speed 650 MHz 850 MHz
Memory Speed 1940 MHz 4800 MHz
Power (Max TDP) 135 watts 108 watts
Bandwidth 62080 MB/sec 76800 MB/sec
Texel Rate 41600 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 128 800(160x5)
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core 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 card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the potential to reach the max fill rate.

Comments

One Response to “GeForce 8800 GTS (G92) vs Radeon HD 5770”
Small GPU upgrade advice says:

[...] would be an upgrade, yes. Here's a comparison: http://www.hwcompare.com/1203/geforc...adeon-hd-5770/ __________________ MoBo: AsRock R2.0 PT880 Ultra CPU: Intel Pentium Wolfdale Dual-Core E6800 [...]

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