AMD Dual Core problems?

XFs · 09-21-2006, 04:36 PM

When people talk about Dual Core problems,
they talk about AMD Dual Core. Right?

I'm staying away from Intel Dual Core CPUs,
but they never had any problems. Right?

{LSK} Otacon · 09-21-2006, 04:48 PM

Ok for one, you dont need 3 threads. For 2, alot of cpus have problems, i dont thinks its AMD specifically, i havent had one problem with my X2 and it overclocks like a demon. So no, its not just AMD.

PC eye · 09-24-2006, 09:42 AM

When new case sees problems with a dual core model cpu the most common advice given for correction is to update the bios on a new board. Many boards will simply not support the faster models without the newer revision.

SirKenin · 09-24-2006, 09:50 AM

The AMD dual core has several problems actually. If you do a search you will find them. One of the most notable is the need for a patch to make the dual core run properly.

There's nothing that can't be fixed with a little bit of due diligence that I know of.

XFs · 09-25-2006, 03:05 AM

Quote:

Originally Posted by {LSK} Otacon

you dont need 3 threads

My PC froze when I posted this. I didn't even think this post existed since I looked and couldn't find it. But ... three?

Dual Core problems just BIOS. That's a relief.

PC eye · 09-25-2006, 04:23 AM

Microsoft developed a hotfix for multiple processor boards(boards with two not one cpu) that is intended for use when you see drastic performance losses. The article is seen at http://support.microsoft.com/?id=896256

How to disable the new performance state policy behavior

loadTOCNode(3, 'moreinformation');Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

After you install the hotfix that is described in this article, you may use registry settings to disable the new performance state policy behavior. To do this, follow these steps: 1.Click Start, click Run, type regedit, and then click OK.2.Right-click HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager, point to New, and then click Key.3.Type Throttle for the new key name.4.Right-click Throttle, point to New, and then click DWORD Value.5.Type PerfEnablePackageIdle for the value name.6.Right-click PerfEnablePackageIdle, and then click Modify.7.In the Value data box, type 0. Make sure that Hexadecimal is selected in the Edit DWORD Value dialog box, and then click OK.

Note You can type 1 in the Value data box to enable the new performance state policy behavior.8.Quit Registry Editor.

StrangleHold · 09-25-2006, 12:29 PM

As fas as I know thats for Dual processors not dual cores

PC eye · 09-25-2006, 08:24 PM

Quote:

Originally Posted by StrangleHold

As fas as I know thats for Dual processors not dual cores

Read it carefully now.
Windows XP SP2 Dual Core Performance FixPosted by: Chris_Tom on Friday, October 07, 2005 - 10:35 AM

Microsoft has released a hotfix to improve performance on dual core systems. It fixes a possible decrease in performance during demand based switching. Cool 'n Quiet must be enabled for the fix to work, and Microsoft will only send you the hot fix if you have been experiencing the problem. The issue is how do you know if you are or not? AMD told me this can have an impact on some games although I've not heard of any problems, and my main gaming system is an Athlon 64 X2 3800+ at the moment. Here are some additional details. Possible decrease in performance during demand-based switching
Demand-based switching refers to the changing of ACPI processor performance states in response to system workloads. For example, demand-based switching can change voltage and frequency in response to system workloads. Windows XP processor power management implements demand-based switching through the Adaptive processor throttling policy. The Adaptive processor throttling policy dynamically and automatically adjusts the processor current performance state in response to the computers CPU use. The Adaptive processor throttling policy works without user intervention.

If you run Windows XP on a computer that has multiple processors, single-threaded workloads may move across available CPUs. This migration behavior is a natural artifact of how Windows schedules work across available CPU resources. However, if a computer is running with the Adaptive processor throttling policy, this thread migration may cause problems. For example, the Windows kernel power manager may not be able to correctly calculate the optimal target performance state for the processor. This problem occurs because the individual logical or physical processor core may appear to be less busy than the processor package actually is. On performance benchmarks that use single-threaded workloads, this artifact may become evident in the following ways:
• Decreased performance
• A high degree of variance between successive runs of the same benchmark tests
The hotfix that is described in this article includes changes to the kernel power manager. These changes make it possible to track CPU use across the processor package. This tracking helps calculate an increased target performance state.

Note This solution favors performance gains over power savings. Although benchmark performance scores may improve, battery life could be negatively affected. Therefore, this kernel policy change must be enabled in the registry to allow for maximum flexibility.
I would be interested to know if this actually effected anyone out there.

http://www.amdzone.com/modules.php?o...rder=0&thold=0

This is only one original reference to using the same hotfix for dual cored models seen in late 2005. http://support.microsoft.com/?id=896256

**Archangel** · 09-25-2006, 08:35 PM

anyone heard of such a fix for Win xp x64 pro?

PC eye · 09-25-2006, 10:05 PM

There may or may not be a registry edit for the 64bit version that is different for the one seen there. If you see the same values in the 64bit version this could be trried there. The fix there is shown as applying to
APPLIES TO

•Microsoft Windows Server 2003, Standard x64 Edition•Microsoft Windows Server 2003, Enterprise x64 Edition•Microsoft Windows XP Service Pack 2, when used with: Microsoft Windows XP Home Edition Microsoft Windows XP Professional•Microsoft Windows XP Tablet PC Edition 2005

This was the only article ever seen on a special reg edit for correcting performance problems. MSDN may have one for the 64bit version buried deep in there somewhere. Generally when moving up from a single to dual cored cpu a download of the latest bios version sees something like this corrected. The newer version offers the support for the higher end model cpus.

09-21-2006, 04:36 PM	#1 (permalink)
XFs Silver Member Join Date: May 2006 Posts: 152	AMD Dual Core problems? When people talk about Dual Core problems, they talk about AMD Dual Core. Right? I'm staying away from Intel Dual Core CPUs, but they never had any problems. Right?

09-25-2006, 12:29 PM	#7 (permalink)
StrangleHold Diamond Member Join Date: Nov 2005 Location: In a realm of unknown Wonders Posts: 6,849	As fas as I know thats for Dual processors not dual cores __________________ NZXT Apollo Athlon 64 X2 5600+ Gigabyte GA MA770 DS3 G Skill DDR2 800 2gb PNY 8800GT Spinpoint F1 500gb. Too bad stupidity isn't painful.

09-25-2006, 08:35 PM	#9 (permalink)
Archangel Moderator Join Date: Jan 2005 Location: Netherlands Age: 21 Posts: 7,837	anyone heard of such a fix for Win xp x64 pro? __________________ God's busy, can I hellp you? Newton is dead, Einstein is dead, I don't feel very well either Xfire - Mirrari Intel Q6600 ( @3.6GHz) Asus Triton 79 Amazing 549/3200 4x 1Gb Corsair XMS2 DDR800 ( @ 960MHz ) Asus Maximus Formula Asus & Sapphire HD3870 512Mb Logitech MX Revolution mouse, G-15 keyboard, Saitek X-45 AeroEngine II case Corsair HX620W PSU

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Which CPU brand do you choose?	ian	CPUs and Overclocking	834	08-20-2006 05:54 PM
dual core Vs dual processor	funkysnair	CPUs and Overclocking	17	07-30-2006 10:38 PM
Dual Core vs Single Question	lukos	CPUs and Overclocking	13	04-25-2006 04:57 PM
Dual Channel Memory with a Dual Core Processor?	Ctcoyote16	Desktop Computers	3	11-10-2005 01:22 AM
AMD Athlon 64 x2 Dual Core	Livzz	CPUs and Overclocking	8	06-26-2005 08:15 PM

09-21-2006, 04:48 PM	#2 (permalink)
{LSK} Otacon banned Join Date: Jun 2006 Location: Kansas Age: 19 Posts: 400	Ok for one, you dont need 3 threads. For 2, alot of cpus have problems, i dont thinks its AMD specifically, i havent had one problem with my X2 and it overclocks like a demon. So no, its not just AMD.

09-24-2006, 09:42 AM	#3 (permalink)
PC eye Diamond Member Join Date: Apr 2006 Location: Inside a pc Posts: 19,005	When new case sees problems with a dual core model cpu the most common advice given for correction is to update the bios on a new board. Many boards will simply not support the faster models without the newer revision.

09-24-2006, 09:50 AM	#4 (permalink)
SirKenin banned Join Date: Aug 2006 Posts: 4,711	The AMD dual core has several problems actually. If you do a search you will find them. One of the most notable is the need for a patch to make the dual core run properly. There's nothing that can't be fixed with a little bit of due diligence that I know of.

09-25-2006, 04:23 AM	#6 (permalink)
PC eye Diamond Member Join Date: Apr 2006 Location: Inside a pc Posts: 19,005	Microsoft developed a hotfix for multiple processor boards(boards with two not one cpu) that is intended for use when you see drastic performance losses. The article is seen at http://support.microsoft.com/?id=896256 How to disable the new performance state policy behavior loadTOCNode(3, 'moreinformation');Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk. After you install the hotfix that is described in this article, you may use registry settings to disable the new performance state policy behavior. To do this, follow these steps: 1.Click Start, click Run, type regedit, and then click OK.2.Right-click HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager, point to New, and then click Key.3.Type Throttle for the new key name.4.Right-click Throttle, point to New, and then click DWORD Value.5.Type PerfEnablePackageIdle for the value name.6.Right-click PerfEnablePackageIdle, and then click Modify.7.In the Value data box, type 0. Make sure that Hexadecimal is selected in the Edit DWORD Value dialog box, and then click OK. Note You can type 1 in the Value data box to enable the new performance state policy behavior.8.Quit Registry Editor.

09-25-2006, 10:05 PM	#10 (permalink)
PC eye Diamond Member Join Date: Apr 2006 Location: Inside a pc Posts: 19,005	There may or may not be a registry edit for the 64bit version that is different for the one seen there. If you see the same values in the 64bit version this could be trried there. The fix there is shown as applying to APPLIES TO •Microsoft Windows Server 2003, Standard x64 Edition•Microsoft Windows Server 2003, Enterprise x64 Edition•Microsoft Windows XP Service Pack 2, when used with: Microsoft Windows XP Home Edition Microsoft Windows XP Professional•Microsoft Windows XP Tablet PC Edition 2005 This was the only article ever seen on a special reg edit for correcting performance problems. MSDN may have one for the 64bit version buried deep in there somewhere. Generally when moving up from a single to dual cored cpu a download of the latest bios version sees something like this corrected. The newer version offers the support for the higher end model cpus.