How to overclock a 7850 past 1050MHz?

Twirlywoos · 26 May 2012 at 13:11

glen8 said:
Does Lucid only work on the Z77 boards?

I have a Z68 which is the older gen of lucid so not sure if it supports running along side my decicated card or not

someone posted a registry hack to get mvp working with non z77 boards but the link got taken down. I didn't follow up the link as I have a z77 board otherwise I would have PM'd it.

Twirlywoos · 26 May 2012 at 13:18

pieman109 said:
Obvious to me that a lot of scores have been slightly inflated by this Lucid thingy and can skew results somewhat. I bet theres a few ppl here wondering why their scores are lower than others when they've got virtually the same clocks, etc.

I said that in the benchmark thread that scores are flawed with LUCID and people should post what they get without it on. I use benchmark results just as a guide but real gaming performance matters. With LUCID on I can actually feel the difference in BF3. It is much smoother and I'm getting ~65FPS in BF3 now with Vsync disabled, Ultra, MB Off, Post Medium, 4XMSAA on my 120hz monitor.

I'm on the 12.4 AMD drivers, not the 12.5 which has been floating around for the past month.

.:SAmSuNG:. · 26 May 2012 at 15:52

Just ordered the MSI 7850 twin frozer 3 thats on offer. Has anyone got any reviews for it?

555BUK · 26 May 2012 at 21:16

I added this to the Heaven benchmark thread, but I though you may also be interested in a bit of 7850 crossfire action:-

7850 X-Fire @ stock 860MHz core / 4800MHz vram

7850 X-Fire @ 1050MHz core / 5500MHz vram

One of my cards (ASIC 84.9%) is good for 1300MHz core in single card config, but the other is poor (ASIC 72%) managing only 1125MHz. The latter seems to be holding crossfire back, but I guess this mismatched pairing is still doing much better than the worlds fastest GTX680.

Funny that the faster card is a bog standard Powercolor, yet the **** card is MSI's latest and greatest 7850.

LexLuthor · 26 May 2012 at 21:52

(Whisper) That just keep pushing my mind on getting a second DCII 7850 for CF.. This thread was the cause of me getting my actual card.. :eek:

Don't put any more ideas on it...

Good numbers, by the way..

Best regards..

EDIT: my ASIC is 78.2%, so not bad at all..

wazza300 · 26 May 2012 at 21:53

@555BUK atleast with the lower asic card you have less chance of frying it

the_director · 26 May 2012 at 21:59

So the 7850 works OK with lucid MVP? I am seriously considering the MSI for £179.

555BUK · 26 May 2012 at 22:01

wazza300 said:
@555buk atleast with the lower asic card you have less chance of frying it

I'll fry them both in the end

.

Here's some 3DMark11 crossfire scores.

7850 X-Fire @ Stock P9967 (Graphics 10398)
7850 X-Fire @ 1050 / 5500 P11195 (Graphics 12253)
Comparison of above two results

wazza300 · 26 May 2012 at 22:02

I can recommend the msi tf3,runs cool/quiet and one 6 pin pci-e

555BUK · 26 May 2012 at 22:03

the_director said:
So the 7850 works OK with lucid MVP? I am seriously considering the MSI for £179.

Lucid is pretty **** within most games. Benchmark figures look good, but I spot lots of stuttering within games.

I always leave it off.

G-Sharp · 26 May 2012 at 22:16

I downloaded the latest Lucid Vitru MVP software and ran a Heaven benchmark. I could not believe my eyes as I watched the FPS sky rocket. In places where FPS would drop below 40, it held a solid 60-100.

Here is a screenshot:

I've been checking the settings just to make sure that I have used the right ones. Seriously, I'm shocked, unless I have missed something and have made myself look silly, this MVP software looks to be a miracle.

555BUK · 26 May 2012 at 22:17

I have decided that the 7850 is the best card ever. They are so good in Crossfire that I am going to sell my EVGA 680, and keep these as my main setup.

The only game I have played where the 680 wins is Skyrim, but AMD will apparently supply Crossfire support for this within a forthcoming CAP update. At the moment Crossfire has no real gains for Skyrim. On the plus side, 2x7850's are noticeably better than the 680 within BF3. This game is properly optimised for crossfire and returns a pretty constant 100fps @ 1920x1200 Ultra with FXAA=High.

wazza300 · 26 May 2012 at 22:31

What are your temps like in xfire? Any stuttering or issues in games?

555BUK · 26 May 2012 at 22:41

wazza300 said:
What are your temps like in xfire? Any stuttering or issues in games?

Temps are pretty poor to be honest. My mobo and case are both MATX, the cards sit immediately next to each other, and airflow is only average. At stock settings things remain quiet but at 1050MHz cards reach early 80's and noise ramps up. Fortunately, stock crossfire performance is very very good so I will probably keep them there for 24/7. At stock they are more than equal to the highest overclocked 680's and 7970's.

HeX · 26 May 2012 at 22:42

Virtu MVP is a load of bobbins, I'd completely disregard any benchies you do in that as no games will benefit anything like Heaven and 3Dmark do.

555BUK · 26 May 2012 at 22:43

Virtu does not work with SLI/Crossfire setups. Even with single cards I find the negatives outweigh the positives. Image quality is King, followed by fps. Virtu increases fps but kill IQ in the form of micro stutter and the ocassional odd textures.

wazza300 · 26 May 2012 at 22:47

Still not bad really for xfire,esp in this hot weather,highest I've seen my single card go is 71c and that's at max oc in ccc

555BUK · 26 May 2012 at 22:50

This is the max stable I can get out of my crossfired 7850's. The useless MSI PE card is holding my lovely Powercolor back big time.

1125 / 5500 @ 1.21v (the Powercolor can do this at it's default 1.050v).

3DMark11 P11588 / Graphics 12927

G-Sharp · 26 May 2012 at 22:51

HeX said:
Virtu MVP is a load of bobbins, I'd completely disregard any benchies you do in that as no games will benefit anything like Heaven and 3Dmark do.

But I've heard that it doesn't really help with anything under 60FPS while with it, I am getting around 60-100 FPS in places I get sub 40 without it.

This was not the case with the previous version of MVP which was not helping much at all with the more intensive parts of the benchmark. I was still getting sub 40 FPS with and without. The new revision seems to have somehow solved this and I am now rarely dropping below 50-60 FPS, running at above 100 FPS for the majority of the benchmark. I don't know what it is, but there certainly is a difference with the new version of the software.

pieman109 · 26 May 2012 at 23:51

G-Sharp said:
But I've heard that it doesn't really help with anything under 60FPS while with it, I am getting around 60-100 FPS in places I get sub 40 without it.

This was not the case with the previous version of MVP which was not helping much at all with the more intensive parts of the benchmark. I was still getting sub 40 FPS with and without. The new revision seems to have somehow solved this and I am now rarely dropping below 50-60 FPS, running at above 100 FPS for the majority of the benchmark. I don't know what it is, but there certainly is a difference with the new version of the software.

this is exactly the point I made earlier on in one thread (can't remember which one) about this MVP distorting scores when used in benching. Some ppl might interpret their score in heaven 'frinstance as too low when compare to someone else's, but if the higher score been elevated by the use of MVP, then it gives a false result and ppl can get confused as to wether their cards are operating at optimum or under performing.
I really think ppl should state at the start of a recorded benchy if they're gonna be using this MVP thingy or not as it'll save a lot of ambiguity between scores.