Forget peak rating.   Peak rating is meant as a safety valve against high transient loads.

You know why the 80% load is reasonable? To leave a buffer in case the cpu ever gets pegegd at 100% (CPUs consume power as well), the cards are ran at stock memory speed due to a misconfig, Windows must be installed and booted⁽¹⁾, or some other serious incident affecting the power usage. It also makes the life of your PSU a tad easier.


(1) just kidding, a bit of Windows-bashing is always in order

I wish ATI released atiflash source code - it could be then modified to use the 5970 flashing routines blindly, without checking the HWID first...
If you somehow manage grab the latest source, let me know.

That's where any hasty and ill-planned interaction with hardware will get you: the 5970 shall become as 5870

Thanks for the heads up, that isn't the only danger with relying on the crappy installation script.
ATI always sucked where any coding was involved and AMD just kept ATI staff...

The 80Plus-imposed 20-50-100% efficiency curve is well known.

Please note that you're crying wolf over an efficiency decrease of 3 to 4% whilst at the same time you need to spend a great deal more money on powerful PSUs trying to keep the load at ±50%.
Try doing that with a huge mining farm, like the one Gigavps has... good luck.

Note that the scale Silverstone are using begins at 79% efficiency and ends at 91% to make the curve look more dramatic than it actually is.


Also, don't forget that the internal temperature increase of any PSU is inversely proportional to its efficiency.
A high-efficiency PSU will generate less heat, thus can be run at high load levels without incurring the temperature-caused MTBF degradation.
Start with a gold-certified PSU and you really can disregard that 2% efficiency loss when running it a 80%.

At 100% load, a gold-certified PSU may waste no more than 12% energy. For a 1000W unit that translates to up to 120W of heat - this really isn't beyond a 140mm fan's ability to dissipate.
Silverstone emphasize low fan speeds (and hence low noise) - this is completely orthogonal to mining as you won't hear the PSU fan with all the howling GPU turbines anyway.


I also have strong reservations about the temperature chart, I don't like it starting at 40°C. Any PSU drawing air from outside of the case will draw much colder air than that.
During this load test of a Silverstone PSU, delta between the intake and exhaust temperatures is just 16°C at 100% load. You can rest assured the innards aren't boiling at 70°C as Silverstone's article would suggest.
I can't agree with the claim that "components are rated at 85°C", this day and age 105°C rated components are being used in high-quality PSUs, including the said 1000W Silverstone one.


At best, the article you linked to suggests that Silverstone PSUs aren't necessarily the best choice for mining due to the emphasis on low-noise, low-speed fans and use of only 85°C rated components.
At worst, it can be regarded purely as propaganda: "Why use a 1500W power supply?" Of course Silverstone prefer to sell you an oversized and overpriced 1500W unit where a much cheaper 1250 watter would suffice.

Praise you! That is a brilliant find indeed, DAT. Yet another potential point of failure I never considered.
Then again, always having gone berserk in the BIOS I never encountered any issues with missing GPUs.
The diligence does pay off, I guess...

The truth is, the old BIOS implementations can barely be called up to snuff today.
UEFI should deal the coup de grace and take over as a ruling standard with great benefit to the whole ecosystem.
No more messing with code devised in the 80s...

Kepler will without doubt suck at integer ops - it's non-trivial to change the architecture enough to turn a well known Achilles' heel into a strong point.
Bitcoin is by no means significant enough to warrant the labor, not by orders of magnitude.

It's quite funny as the same performance characteristics that make AMD cards better suited for mining are what makes those cards inferior to nVidia's for many GPGPU applications.

Not if done adroitly.

Two rigs, each with a single GPU?
That's a mind-boggingly dumb setup, just ludicrous.


Put that 6970 together with the 5970 in a single rig.
Does the mobo have enough pcie slots for three cards? Sell the superfluous tower with that weak 550W PSU and use the funds you get to get another decent card (aim for a 5970).
A single tower with 3 good GPUs makes a whole damned lot more sense then your current setup.

If the mobo won't support 3 GPUs, make the slots you have matter: purchase another 5970 card and run the 5970 tandem.


What make and model are those PSUs? A crappy PSU might fry the whole rig, kill your family, and burn your house down to cinders... well, maybe nothing that drastic but you get the picture, right?
A PSU is what makes or breaks a mining rig.


Two towers and a TV/monitor... not overly bad, considering that you can sell the parts you won't need.
To build a great dedicated mining rig you need an excellent psu, as many good AMD cards as that PSU can power, a motherboard to connect them all, 2 gigs of RAM, and virtually any cheap CPU.
Even hard drives are optional since they can be supplanted with much cheaper and less energy consuming flash drives.

Fans... you're gonna need lots of them humming and buzzing fans to provide enough airflow to cool the rig down.
GPUs have a nasty tendency of dying when overheated for extended periods of time.


Alienware and a SHTF scenario... no comments.
Hd6990 mobile being equipped with measly 1120 stream processors (as opposed to 3072 SPs in a normal hd6990 or 3200 in a hd5970), how do YOU think it will compare to the normal cards? Mind you, the core speed is also significantly lower.

As to the disappointing hash rate, perhaps instead of the darknet you should visit these forums more often?
Try mining support, hardware, and miners - a whole repository of knowledge here.

A dab of hot glue and that paper clip ain't going anywhere any time soon.

Google is your friend

I'm linking to a Seasonic X-1050 review but it's built on the same platform as the X-1250. No minimum load required.
As to the AX1200, see the CrossLoad2 test results. Anything weird going on with 0 load at 3.3 and 5V? The answer is a resounding NO. You're good to go without messing around with resistors.

Unless your PSU is an old group-regulated design, yup, that should be all you need.

Loading the 5V rails is a way to avoid what's called a cross-load, a situation where some rails aren't used at all and other are heavily loaded.
Group regulated PSUs could easily go out of spec - even dangerously so - in this scenario.

Keep in mind that if your PSU has a MINIMAL load defined for 3.3V or 5V, you should make sure that load is applied.
Otherwise you're running the PSU out of manufacturer's spec.

Good joke
Full anonymity absolutely guaranteed, yes siree.

I rather think it's your machine that's acting up.

No chance in hell I'd trust an operating system once it's been compromised by malware.
The malware itself may be gone but you can't know for certain what system damage or back-doors got left behind.
Once trust is broken, the best thing to do is to backup your data, erase the hard drive, and reinstall from scratch.

BTW, a rootkit is never used alone - its purpose is hiding other processes, files, and OS activity from the user.

Look at the following lines:

The address you specified is garbled: [https:api.bitcoin.cz].
As a result, DiabloMiner thinks you omitted the protocol part (http://) and appends it in front of your the hostname resulting in something as nonsensical as http://[https:api.bitcoin.cz]:8332/

You are not supposed to use square brackets when typing in the hostname, just enter http://api.bitcoin.cz
No brackets, no quotation marks.
The same goes for port number; it's 8332.


Please note that you can also provide the address and logon credentials passing them as parameters to DiabloMiner:
-u as in user,   -p as in password,   -o as in pool,   -r as in port
This is usually the preferred way of launching any miner.

Paste the whole command line; all the arguments you started DiabloMiner with.

Ideally, path to the data files should be accessible in the client via the Settings -> Options menu.

The beauty of using a symlink is that it won't ever be broken by reinstalling the client. It is paid for by the necessity to type a few dozen characters into the elevated command prompt.
The biggest benefit of modifying shortcuts is simplicity. This approach is less bulletproof.
Both are acceptable solutions, enough said.

A bright side of messing with the registry... ugh, there is no bright side to that

Provided only this modified shortcut is ever used.
Should an unmodified shortcut or the executable itself be invoked, this approach will fail.
An installer might overwrite the start menu shortcut during upgrade.

I'm not complicating things, I'm trying to point out potential problems.

I removed the line suggesting registry changes as I said this was a total overkill.
I can't see anything wrong with symlinks, that's a great feature of the new versions of Windows.
Then again, I agree that an approach requiring some command prompt action might be considered a bit geeky by the non-techie crowd.

This seems a bit of a band-aid to me as the modified path has to be specified at every start. Should OP use an unmodified shortcut (like the one in Start Menu) or launch the executable manually, the client will generate a new %appdata%\bitcoin directory.

Still, in dire need the -datadir parameter can be used with great success. Good thing you mentioned it psy.

On Windows Vista or later, the whole %appdata%\Bitcoin directory can be replaced with a symbolic directory link:
(0) Make sure the bitcoin client is not running.
(1) Move the %appdata%\Bitcoin directory to its target location (e.g. d:\bitcoinData)
(2) Run the command prompt as root and issue the command mklink /d "c:\users\<your_user_name_here>\appdata\roaming\bitcoin" "d:\bitcoinData"
done!

This allows you to keep bitcoin client data anywhere, e.g. on a secure local fileserver.

EDIT::You should update your client to 5.2, there is no benefit in using the outdated version. Great many bugs were fixed since 4.0.

Had you tried that yourself you'd know that bitcoin client crashes when using hard-linked directories.
Try your own tool or grab Sysinternals Junction from Microsoft and for crying out loud test your advice before posting.

Not quite. Always use a STATIC intensity, no matter whether it's set to 6, 8, or 14 as long as you don't use d.

DAT is using intensity 9 because he has some powerful cards. Remember that intensity is a fine-tuning parameter and higher does not necessarily mean better.
Cards pulling 230MHash/s are generally better suited with intensity 8.

The smarmy remarks don't change the face that you either lied to your prospective customers or committed a crime.
Either way, you came through as a scumbag the community would likely be better off without.

Answered my questions? Omissions and half-truths.


If you never did anything wrong, why did you remove not only your posts in this topic but also in your other topics?