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Radeon HD 5770 vs Radeon HD 6770 1GB

Intro

The Radeon HD 5770 comes with a GPU clock speed of 850 MHz, and the 1024 MB of GDDR5 RAM runs at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 6770 1GB, which features GPU clock speed of 900 MHz, and 1024 MB of GDDR5 memory set to run at 1050 MHz through a 128-bit bus. It also is made up of 800 SPUs, 40 Texture Address Units, and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 is 14% faster than the Radeon HD 6770 1GB overall, due to its higher bandwidth. (explain)

Radeon HD 5770 76800 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 9600 (14%)

Texel Rate

The Radeon HD 6770 1GB will be just a bit (approximately 6%) faster with regards to texture filtering than the Radeon HD 5770. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 2000 (6%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 1GB is superior to the Radeon HD 5770, though not by far. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
Radeon HD 5770 13600 Mpixels/sec
Difference: 800 (6%)

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

Radeon HD 5770

Amazon.com

Radeon HD 6770 1GB

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

Model Radeon HD 5770 Radeon HD 6770 1GB
Manufacturer AMD AMD
Year October 13, 2009 January 2011
Code Name Juniper XT Juniper XT
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe x16
Memory 1024 MB 1024 MB
Core Speed 850 MHz 900 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1200 MHz (4800 MHz effective) 1050 MHz (4200 MHz effective)
Unified Shaders 800(160x5) 800
Texture Mapping Units 40 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1
Power (Max TDP) 108 watts 108 watts
Shader Model 5.0 5.0
Bandwidth 76800 MB/sec 67200 MB/sec
Texel Rate 34000 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 13600 Mpixels/sec 14400 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to reach the maximum fill rate.

Comments

25 Responses to “Radeon HD 5770 vs Radeon HD 6770 1GB”
[...] mejor porque trabaja con drivers nuevos) y ademas la pienso vender luego, por lo tanto mas actual. Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare Radeon HD 5670 vs Radeon HD 5770 – Performance Comparison Benchmarks @ Hardware Compare [...]
[...] aici ca sa-ti faci o idee despre diferentele dintre 5770 si 6770 http://www.hwcompare.com/5704/radeon...n-hd-6770-1gb/ . __________________ R.I.P. Toranagah, Mon [...]
[...] Re: Final config of my PC.. Pls. choose for me ! hmm.. okay.. This seems to be a very good deal for me @ 5.4k ! Theitdepot - XFX Radeon HD6770 1GB DDR3 ATI PCI E Graphic Cards (HD-667X-ZHF3) Although its the ddr3 version, I see that the 6770 has opengl 4.1 support as against 5770's opengl 3.2 support Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare [...]
Shefath says:
I would recommend the 5770 because benchmarks tend to prefer that one and the card has more bandwith too.
[...] pe diferente modeste ? Parerea mea ... PS: Ai o comparatie "eala" intre generatii : http://www.hwcompare.com/5704/radeon...n-hd-6770-1gb/ BAfta la algere, Flavius [quote=AndrMr;1140800] Alta chestie de stiu, placile 6670, 6750, 6770 [...]
meg says:
can you crossfire a 5770 with a 6770??
meh says:
can you crossfire a 5770 with a 6770
Pete says:
Probably not, the cards need to be of at least the same generation. Besides, these two cards are so close you might as well get a second 5770 if you're going to upgrade, save you some hassle.
[...] im dauertieffall ist. Hab mich im netz mal versucht schlau zu machen und hab auch ein paar tests zwischen den 2 karten gefunden, im grunde geben diese sich ja nicht viel, teilweise punktet ja [...]
Sid says:
It's a shame that the new generation improved so low from the previous,with prices rising sky-high.I really think the 6770 should have been better.
nitin says:
which is the best gpu 5770 or 6770?
ben says:
HOW CAN I USE 3 MONTITORS
i have the 6770 but after about a mond i still cant connect my 3 displays, my pc is sure good enough, i7 @3.40, 8gb RAM 2tb HD ... mail me benjamin1995 AT msn.com
admin says:
@ben - That's a bit beyond the scope of this site, but maybe this will help? http://www.tomshardware.com/forum/281505-33-monitors
Subir says:
6770 banwidth is actually 76.8 gb/sec...dont belief this site:-p
[...] ecco che vantaggi portava nella fascia medio-bassa 6770 vs 5770 (si e no un 10% di differenza) Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare Rispondi [...]
Duda Duda!!! says:
[...] es ligeramente mayor la 6770 porq pertenece a una generacion adelante. Aki una comparativa: 6770 vs 5770 [...]
[...] e che crolla se attivi le dx11 sisi infatti hai proprio ragione vedo anche nelle comparazioni:Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare MAH!!! Rispondi [...]
[...] ard the shops at SLS. Or buy 2nd hand at forums for ard $70. Best bang for buck for your budget. Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare Maximum Detail Benchmarks : Diablo III Performance, Benchmarked __________________ [ [...]
MAL22 says:
You idiots, the HD 6770 and the HD 5770 are the same damn cards except that the 6770.
[...] ارزون دادم الان قاطی کردم دوست گلم این بنچمارکش Radeon HD 5770 vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Compare بعدم دوست عزیزم الآن همه میدونن که برندها تفاوت [...]
Denzyl says:
At what resolution can the hd 6770 handle games like Crysis 2,Battlefield 3...etc at max settings? Please reply...
leato15 says:
como hago la diferencia de una tajreta de video

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