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Message 7798 - Posted: 19 Jan 2009, 20:16:25 UTC

I\'m not sure where else to post this so here goes...

I\'m starting to think that I might have a configuration problem with my Q6700-based system (XP SP3 32-bit).

When I run BM\'s CPU benchmarks, I consistently get about 5600 to 5800 Dhrystones on this system now. When the system was just built (quite bare) and didn\'t have ANYTHING additional running (like AV), I was only getting around 6000 Dhrystones.

However, when I look at other people\'s machine stats I see 6800 to 7200 Dhrystones being the norm on this chip and with the same O/S. I know that not everybody is overclocking their machines.

I\'m at a loss to understand this performance difference. The CPU clock multiple is 10 so the CPU is at 2.66 GHz (right where it should be), it\'s got 1066 memory in it...

If any of you have non-overclocked Q6700 CPUs and you\'re way above me in the benchmark, I\'d like to know what you suggest that I take a look at.

Thanks
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Message 7799 - Posted: 20 Jan 2009, 10:51:15 UTC - in response to Message 7798.  


When I run BM\'s CPU benchmarks, I consistently get about 5600 to 5800 Dhrystones on this system now. When the system was just built (quite bare) and didn\'t have ANYTHING additional running (like AV), I was only getting around 6000 Dhrystones.


Sounds about right. I normally overclock slightly but without overclocking runing Vista HP 32 bit and Boinc 6.5.0 (with free AVG and free Zone Alarm running) I get:

2617 floating point MIPS (Whetstone) per CPU
5733 integer MIPS (Dhrystone) per CPU.

Using Ai Suite (An Asus download - only for their brand motherboards) at the default \"auto\" performance setting of 2.8 Mhz I get:

2717 floating point MIPS (Whetstone) per CPU
6122 integer MIPS (Dhrystone) per CPU

However even small programs can have an impact on performance; in overclocked mode with Win Mail and Win Media sharing processes running I got:

2718 floating point MIPS (Whetstone) per CPU
6083 integer MIPS (Dhrystone) per CPU

So be sure to turn off anything you don\'t need. I\'ve just turned those two extra Win processes off! - Thanks Bill...

I use Win Patrol (free edition) on all my machines as I could not be bothered to fight Vista\'s Window\'s Defender everytime I wanted to run a program!

The motherboard I ran the above tests on is an Asus P5K-V with a an Intel Q6700 (Retail boxed set still with its standard Intel cooler). Memory is a single 2Gb module of Kingston\'s 667MHZ DDR2 ECC.

Hope that helps..

Phoneman1
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Message 7802 - Posted: 20 Jan 2009, 16:55:17 UTC - in response to Message 7799.  

Phoneman,

That certainly DOES help. Thanks for your response. I know now that what I\'m seeing is not TOO terribly off the norm, although there IS something going on that is degrading things a bit.

My CPU benchmarks last night dropped to 5400 Dhrystones. It could be the Comodo firewall/AV I recently installed, but task manager doesn\'t show these tasks gaining much CPU time. In fact, whenever I run task manager, it usually shows 25%/25%/25%/24% for all four cores running BOINC projects, with 1% showing for task manager itself (adding to 100%).

I\'ve disabled unnecessary or unwanted XP services, and done other various XP tuning tricks, but I didn\'t see very much difference.

If I could get to 6000 without O/C then I\'d be satisfied.
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Message 7803 - Posted: 20 Jan 2009, 18:33:30 UTC - in response to Message 7802.  

About 18 months ago I ran some tests on my old Pentium 4 1.9 Mhz machine. I noticed a drop in performance when I added a PCI card with additional 4 USB ports and again with a network card (RJ45 connnector). I suspect it was acombination of reduced current available and also bus contention on the motherboard. So if you have added any non-essential hardware best remove it if you can, less is definitely more in this game!

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Message 7804 - Posted: 20 Jan 2009, 19:56:46 UTC - in response to Message 7803.  
Last modified: 20 Jan 2009, 20:01:18 UTC

About 18 months ago I ran some tests on my old Pentium 4 1.9 Mhz machine. I noticed a drop in performance when I added a PCI card with additional 4 USB ports and again with a network card (RJ45 connnector). I suspect it was acombination of reduced current available and also bus contention on the motherboard. So if you have added any non-essential hardware best remove it if you can, less is definitely more in this game!

Phoneman1


Hmmm - voltage... When I was building the machine the Gigabyte GA-EX38-DS4 mobo doc said that if I was using an \"extreme\" type processor, then on the ATX_12V_2X/ATX socket/2x4 12V Power Connector it recommended that I use a 2x4 (8-pin) power connector configuration rather than a 2x2 (4-pin) configuration. This mobo socket and the connector was defaulted to a 2x2 config as you had to remove protective covers to use the 2x4 config.

However, it didn\'t say NOT to use the 2x4 configuration if I wasn\'t using an extreme processor (how\'s that for a bunch of negatives), and I thought about this for a while, but decided to play it safe and just use the 2x2 configuration. I was afraid that I would blow something otherwise.

I\'m wondering if the CPU is getting enough power? It would seem to me that it would malfunction in that case, producing invalid BOINC work units or they would blow up frequently. Neither is the case - the system is VERY stable. But I don\'t know much about CPU voltages.

So what should the voltage read? I\'ve got speedfan installed so I can see all the mobo readings.

Otherwise, there isn\'t any overly taxing PCI cards or expansions, and I didn\'t install any of the power-conserving or throttling software that came with the mobo.
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Message 7805 - Posted: 20 Jan 2009, 22:45:18 UTC - in response to Message 7804.  

I used to use Speedfan but had to remove it due to conflicts with other Asus software which caused the other Asus software to trigger both high and low voltage alarms as well as random temperature alarms - all false!

The Ai Suite, which I now use, is currently indicating a CPU voltage of between 1.1680 and 1.1760 volts regardless of whether it is in o/clocked mode or not. I am a bit puzzled by that so I am not sure how much reliance I\'d put on that reading to be honest.

The Asus instructions for the motherboard stress the system won\'t even boot unless both the 24 pin EATXPWR and the 4 pin ATX12V connections are made. This is one area where manufacturers are liable to be very different but it is probably worth re-reading your manual just to be sure.

Incidentally, my power supply is rated at 550w and it is also running a GTX260 graphics card.

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Message 7806 - Posted: 20 Jan 2009, 23:00:51 UTC - in response to Message 7805.  

The Asus instructions for the motherboard stress the system won\'t even boot unless both the 24 pin EATXPWR and the 4 pin ATX12V connections are made. This is one area where manufacturers are liable to be very different but it is probably worth re-reading your manual just to be sure.

Incidentally, my power supply is rated at 550w and it is also running a GTX260 graphics card.

Phoneman1


Thanks... yeah, like you, the 4-pin ATX12V (the 2x2) is what I\'m using. I have read and re-read the manual until I\'m cross-eyed and there\'s nothing more to be gleaned from it.

There\'s a couple of support sites that I can ask to see what they say.

My power supply is 650w and I\'m running a low-end graphics card.

Ed
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Forums : Technical Support : Q6700 Performance