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Written by Servando Silva   
Tuesday, 18 January 2011
Table of Contents: Page Index
GIGABYTE Radeon HD 6850 GV-R685OC-1GD
AMD Radeon HD 6850 GPU Features
Closer Look: GIGABYTE Radeon HD 6850
GIGABYTE HD 6850 Detailed Features
Video Card Testing Methodology
DX10: 3DMark Vantage
DX10: Crysis Warhead
DX11: Aliens vs. Predator
DX10: Just Cause 2
DX11: Lost Planet 2
DX11: Metro 2033
DX11: Unigine Heaven 2.1
Overclocking
VGA Power Consumption
AMD Radeon HD 6850 Final Thoughts
GIGABYTE HD 6850 Conclusion

VGA Power Consumption

Life is not as affordable as it used to be, and items such as gasoline, natural gas, and electricity all top the list of resources which have exploded in price over the past few years. Add to this the limit of non-renewable resources compared to current demands, and you can see that the prices are only going to get worse. Planet Earth is needs our help, and needs it badly. With forests becoming barren of vegetation and snow-capped poles quickly turning brown, the technology industry has a new attitude towards turning "green". I'll spare you the powerful marketing hype that gets sent from various manufacturers every day, and get right to the point: your computer hasn't been doing much to help save energy... at least up until now. Take a look at the idle clock rates that AMD programmed into the BIOS for this GPU; no special power-saving software utilities are required.

GV_R685OC1GD_GPU-Z_Sensors_tab.png

The HD 6850 works at 100/300MHz in idle mode, while VDDC lowers to 0.950 volts. At full load it increases frequencies to 820/1050 and VDDC goes up to 1.15 volts. The good part is that the HD 6800 series can be overclocked while keeping idle frequencies, saving some energy and keeping lower temperatures. This wasn't possible with HD5800 without modified BIOS.

To measure isolated video card power consumption, I used the Kill-A-Watt EZ (model P4460) power meter made by P3 International. A baseline test is taken without a video card installed inside our computer system, which is allowed to boot into Windows and rest idle at the login screen before power consumption is recorded. Once the baseline reading has been taken, the graphics card is installed and the system is again booted into Windows and left idle at the login screen. Our final loaded power consumption reading is taken with the video card running a stress test using FurMark. Below is a chart with the isolated video card power consumption (not system total) displayed in Watts for each specified test product:

Video Card Power Consumption by Benchmark Reviews

VGA Product Description

(sorted by combined total power)

Idle Power

Loaded Power

NVIDIA GeForce GTX 480 SLI Set
82 W
655 W
NVIDIA GeForce GTX 590 Reference Design
53 W
396 W
ATI Radeon HD 4870 X2 Reference Design
100 W
320 W
AMD Radeon HD 6990 Reference Design
46 W
350 W
NVIDIA GeForce GTX 295 Reference Design
74 W
302 W
ASUS GeForce GTX 480 Reference Design
39 W
315 W
ATI Radeon HD 5970 Reference Design
48 W
299 W
NVIDIA GeForce GTX 690 Reference Design
25 W
321 W
ATI Radeon HD 4850 CrossFireX Set
123 W
210 W
ATI Radeon HD 4890 Reference Design
65 W
268 W
AMD Radeon HD 7970 Reference Design
21 W
311 W
NVIDIA GeForce GTX 470 Reference Design
42 W
278 W
NVIDIA GeForce GTX 580 Reference Design
31 W
246 W
NVIDIA GeForce GTX 570 Reference Design
31 W
241 W
ATI Radeon HD 5870 Reference Design
25 W
240 W
ATI Radeon HD 6970 Reference Design
24 W
233 W
NVIDIA GeForce GTX 465 Reference Design
36 W
219 W
NVIDIA GeForce GTX 680 Reference Design
14 W
243 W
Sapphire Radeon HD 4850 X2 11139-00-40R
73 W
180 W
NVIDIA GeForce 9800 GX2 Reference Design
85 W
186 W
NVIDIA GeForce GTX 780 Reference Design
10 W
275 W
NVIDIA GeForce GTX 770 Reference Design
9 W
256 W
NVIDIA GeForce GTX 280 Reference Design
35 W
225 W
NVIDIA GeForce GTX 260 (216) Reference Design
42 W
203 W
ATI Radeon HD 4870 Reference Design
58 W
166 W
NVIDIA GeForce GTX 560 Ti Reference Design
17 W
199 W
NVIDIA GeForce GTX 460 Reference Design
18 W
167 W
AMD Radeon HD 6870 Reference Design
20 W
162 W
NVIDIA GeForce GTX 670 Reference Design
14 W
167 W
ATI Radeon HD 5850 Reference Design
24 W
157 W
NVIDIA GeForce GTX 650 Ti BOOST Reference Design
8 W
164 W
AMD Radeon HD 6850 Reference Design
20 W
139 W
NVIDIA GeForce 8800 GT Reference Design
31 W
133 W
ATI Radeon HD 4770 RV740 GDDR5 Reference Design
37 W
120 W
ATI Radeon HD 5770 Reference Design
16 W
122 W
NVIDIA GeForce GTS 450 Reference Design
22 W
115 W
NVIDIA GeForce GTX 650 Ti Reference Design
12 W
112 W
ATI Radeon HD 4670 Reference Design
9 W
70 W
* Results are accurate to within +/- 5W.

The GIGABYTE GV-R685OC-1GD pulled just 29 (164-135) watts at idle and 148 (283-135) watts when running full out, using the test method outlined above. Consider PSU efficiency into the equations as I'm using an 80 plus bronze power supply. AMD has fixed the idle frequency problems that plagued the HD5xxx series, especially in CrossFireX mode. In idle mode, the BIOS needs to run the clocks WAY down, without any ill effects. We've become used to the low power ways of the newest processors, and there's no turning back.

I'll offer you some of final thoughts and conclusion on the next page...



 

Comments 

 
# Uhh what?Cody 2011-01-20 22:07
I'm an owner of the 775 model version, I have the card running stable at 950 Core clock / 1200 Memory with the standard voltage. Bumping the voltage to 1200 in Trixx results in a stable 1000 GPU core clock. You need to update Trixx to the latest version.

##hardwarecanucks.com/forum/overclocking-tweaking-benchmarking/39957-gigabyte-6850-3-decent-ocr-seems.html
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# RE: Uhh what?Servando Silva 2011-01-20 22:31
I used the latest version of TriXX, it just wouldn't go above 860-870MHz (Core) without getting artifacts. Anyway, you've got the non-OC version with different ICs, which is one of my key-points in my article.
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# RE: GIGABYTE Radeon HD 6850 GV-R685OC-1GDCody 2011-01-21 08:26
I have experience with the OC version as well, it can hit 1GHz @ 1250 (Voltage setting in Trixx) and run stable however it runs a bit hot after a while in Furmark. Currently I have his OC'd to 950 / 1150 without artifacts at the stock voltage with the fan speed at 1175.

Perhaps you just got unlucky?. Either way I liked your review.
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# RE: RE: GIGABYTE Radeon HD 6850 GV-R685OC-1GDServando Silva 2011-01-21 11:10
Really? Everywhere I read about a person getting the OC version just complains about not supporting voltage changes and trying to change it for the non-OC version. There are some threads at Xtreme Systems about volt-modding as that's the only way to do it. Just to add, you're using TriXX 3.0.2 BETA, right? That's the latest version announced at Sapphire's homepage.
Glad you liked the review.
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# RE: RE: RE: GIGABYTE Radeon HD 6850 GV-R685OC-1GDCody 2011-01-21 18:51
Yes 3.0.2, the slider just slides over. I was at my buddies house looking at the card to make sure it was the OC version and it allowed the voltage to be modified. He however bought it Openbox (which I didn't know) so perhaps the person who sold it to him already unlocked the voltage.

That or maybe it's not actually adjusting the voltage.
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# RE: RE: RE: RE: GIGABYTE Radeon HD 6850 GV-R685OC-1GDServando Silva 2011-01-21 21:41
It's not that the voltage is locked, problem is that this specific version includes a different GPU Core voltage controller, which has no software support (yet), not even with TriXX or MSI AF. Since the controller they used isn't very common, I doubt we'll see something avalable soon.

Anyway, if you can re-check and try to modify voltage, that would be great, because that could mean GIGABYTE is making a different version (revision) with another GPU controller.

Thanks.
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# black screen no signal !Agassizi 2011-01-30 15:36
Unfortunatelly is a lot os problems with this (GigabyteHD6850)vide ocards.There ara many users who reported when he playing games after a short period of time the monitor instantly turn off and apear the NO SIGNAL labell, and nothings help just a restart.Can I ask which BIOS version are you used when you make this rewiew? Because in the last 3 months arived 3 BIOS versions.The last BIOS changed the card specification. IDLE 40% cooler, and the GPU RAM ferequency was modyfied to 775/1005.(the original was 25%cooler speed and 775/1000.
Another strange thing, the factory original bios set the coolers to run at 73% and ofcourse the sound level was realy anoying.
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# RE: black screen no signal !Servando Silva 2011-01-30 18:54
I didn't have any of the problems mentioned. I used the BIOS shipped with this sample, which is displayed at the testing methodology section. Another thing is that this is the OCed version, which means it's got 820 MHz/ 1050MHz instead of 775MHz.
GIGABYTE doesn't display any BIOS update for this model, but I've checked and there's a BIOS update for the non-OC model.
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# BS no signal errorAgassizi 2011-01-31 10:29
Hi,
Yes on the Gigabyte webpage ,is a new BIOS for "basic" Gigabyte HD 6850 cards (775/1000).This arrived at 14 january 2011 .As I mentioned in my previous post the Vram clock and the cooler speed was changed (Vram from 1000 to 1005 and cooler from 25% to 40%).Unfortunatelly doesent solve the black screen problems for everybody.Some users reported the BS with this bios version to.
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# RE: BS no signal errorServando Silva 2011-01-31 21:09
I'm sorry to hear that.
Well, I'm still using this little puppy and it's not giving me any problems. Could you tell us what are the conditions or signals before going to black screen? Perhaps I could try.
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# RE: GIGABYTE Radeon HD 6850 GV-R685OC-1GDAgassizi 2011-02-01 05:46
win 7 64bit genuine, PSU enermax 600W 87+,HD Gigabyte HD 6850 BIOS F3_B , Catalyst 10.12(but the new 11.1 give the same BS problem)
The problem I meet undert FarCry2 benchmark ultra high settings full hd dirX10, Crysis- paradise lost level ,GTA4 and NFSShift
(all games full HD aa8x vsync on)
The GPU temperature never exceed 68C.
Far Cry2 bench ~ 55C , Crysis 67 C, GTA IV 68C.The RAM temperature I dont know because I dont know any software which can mesure this.There is some rummors which say the memory are faulty , but I dont want comment this because until today I dont see any official evidence as the Hynix memory cause this problem.
I check my card temperRATURE with ccc OVERDRIVE, aida64 and MSI AFTERBURNER all programs show me the same temperature so resulting the heat level is ok.
The F3_C bios fom 14 january seems to resolve the BS problem to me but I am not calm at all because I know a couple of users which card
is faulty with this BIOS version to.I atach a couple of videos what I find to youtube.My system (and my buddys sitem ) behaviour is 100% the same.
None of us overclocked her card! every card working on factory clocked level 775/1000 1,5 V.
Many serbian, hungarian, romanian (but not only this country) forums is full with users who have exact the same problem.Most error was reported with have
gigabyte cards , but is other vendors card which have this BS NO Signal problem too. Asus,Saphire,MSI ,etc

I will atach a couple of youtube videos to see what I takling about

##youtube.com/watch?v=r53or6LNwBc&feature=player_embedded

##youtube.com/watch?v=cRUWC15lsQQ

##youtube.com/watch?v=ilD2649KNF8
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# Gigabyte BS No signal errorAgassizi 2011-02-01 06:09
I forgot to tell one thing, last year in november -december when the it was not aviable the F3C(fixed?) Bios on the Gigabyte page , a couple of users trying different "tricks? and a couple of person report , if downclock her cards memoryclock at 900 the problem disapear.( 775/900 )MHZ)_. Anyway in my opinion this is not a correct sollution.NObody spending her money to be forced to downclocked her card.

Here is the link with the new BIOS.If somebody have the same problem he can try it maybe will help but not 100%.And once again! the cooler rotaion will become 40% (original os 25%)and the memory frequencies will rising from 1000 to 1005 Mhz.This BIOS is only for GV-R685D5-1GD cards. I dont dont know why was necessary this modification but to be honest I like att all,especially after saw a couple of the same cards ,which working perfect with original BIOS(775/1000, 1,5V ) and doesent make Black screen error.

##gigabyte.com/products/product-page.aspx?pid=3614#bios
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# BS + FREEZING HD 6850rdizzle 2011-02-16 08:33
I recently had the same issue with my HD 6850.
Mine has been OC'd to 950/1200 on stock voltages.
Ran OCCT for an hour with no errors detected.
Did a memtest for a whole night with no errors.

My problem is after playing CS:Source for more than an hour..my computer screen turns black and shows "No Signal" and at the same time my computer freezes and the sound just keeps repeating the last thing that was heard.

I can't do anything but do a hard reset..and now I notice when I boot up Windows there's an extra black screen with a messed up windows logo right before Windows actually loads up.

CS:Source FPS average around 299

Specs:
Intel i5 760
Motherboard: Sabertooth 55i
Graphics Card: Gigabyte HD6850
Memory: Ripjaws (2x4)8GB PC3-10666
Hard Drive: WD Black 1TB
Optical Drive: Samsung SH-S243D
Power Supply: Corsair TX750W
Display: Acer p244w 24" 1920 x 1080
Operating System: Win7 64bit
Speeds
CPU
Stock: 2.8
Memory
Stock: 1333
Memory - Timings
Stock: 9-9-9-24 1.5V
Graphics Card - Core
Stock: 775
Overclocked: 950
Graphics Card - Memory
Stock: 1000
Overclocked: 1200
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# Msi Afterburner beta 7rdizzle 2011-02-16 08:43
I also forgot to mention that I recently updated MSI Afterburner 2.1.0 beta 7 coming from beta 6...and I noticed this happening...
I might revert back to the old beta 6 later when I get home and do some more gaming to see if that fixes the problem...
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# Oc ratesPedro 2012-01-15 04:50
Hi Folks i've just installed my brand new HD 6850 GV-R685OC-1GD, and as per i upgraded from Sapphire 5570 1GB DDR3 to this new one i've already had the Catalyst Control Center installed. I just put the GPU and the driver was automatically installed by w7 and updated by Catlayst (i did not installed the Gigabyte installation CD)
On AMD software by checking the box to enable Graphics Over Drive:
Automatic OC options on AMD Vision Control Center are:
GPU range: from 600 to 985 (just drag the bar)
MeM range: from 1050 to 1260 (just drang the bar)

My question: can i safely drag to 958 and 1260? as they appear as option to me?
very good review by the way

Specs:
AMD Phenom II X4955 Black Edition (800-3800oc by AMD auto tune)
Motherboard: ECS A785GM-M
Graphics Card: Gigabyte Radeon HD 6850 GV-R685OC-1GD
Memory: Ripjaws (4x4)16GB PC3-10666 Markvision 1333Mhz
Hard Drive: Samsung HD-322HJ
Optical Drive: LG GH22NS50
Power Supply: Akasa 600W (AK-P600G-SLAM)
Display: LG W2353V 23" 1920 x 1080
Operating System: Win7 64bit
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# RE: Oc ratesDavid Ramsey 2012-01-15 08:04
You can do it safely, as in "it won't physically damage your card". However, there's no guarantee the card will run with those settings: you could see visual artifacts, or the computer could lock up or crash.
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# RE: Oc ratesOlin Coles 2012-01-15 08:13
The Radeon HD 6850 is a good overclocking card, but the limit varies from card to card. I suggest finding the maximum GPU and Memory overclock (GPU is more important, and memory really doesn't/shouldn't be overclocked), then backing down 10MHz or more.
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# RE: Oc ratesTony 2013-02-05 10:43
i know this is a year late but ive gotten mine to 920/1200 with no problems on stock voltage with msi afturburner 2.3x with unoffical oc'ing enabled.
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