Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: 8-Core, overclocked machine slow...


12 Nov 2012   #21

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by x BlueRobot View Post
I would test RAM stick individually, and run the test overnight, and if an error is found with the RAM stick, place the same RAM stick in a different motherboard slot (repeat for all the slots), if an error is found in all the slots for the same RAM stick then you have a faulty RAM module.

However, if no errors are found for the RAM module in a different slot, then you have a bad motherboard DIMM slot. Remember, to make sure the contacts on the RAM modules are clean and the motherboard slots are not covered or full of dust.

Run the test for least 6-7 passes.
I started testing before I read your post. I pulled two, moved my SSD, and added another HD to my system for VMs. Ran the test, and almost INSTANTLY, I got an error. Shutdown, swapped out the first stick and running again. 49% thru the test without errors. I'm guessing it's safe to say it's the stick no the slot...


My System SpecsSystem Spec
.

12 Nov 2012   #22

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x86 Service Pack 1 - Linux Mint Mate 14 x64
 
 

Keep testing in all the slots, the tests will take time, but least you will sure what RAM stick or DIMM slot is causing the problem.
My System SpecsSystem Spec
12 Nov 2012   #23

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by bobafetthotmail View Post
also note that most java and flash around are mostly single or two-threaded programs. That means all cores beyond the 4th are there just to keep time because there are only two "streams" of instructions to process. Having more cores means that each core taken alone is weaker than a processor with less cores but still running at the same frequency. Given modern needs, it's not a so good idea, as lots of programs (and games) aren't going to multithread over 4 cores, go figure over 8. So you have half of your processing power that is basically wasted.

AMD stuff shines when you are doing heavily multithreaded things (basically workstation or server stuff), but for gaming and personal use the best one is around the i5 3750k, performance-wise.

Also, now that you mention overclocking, AMD cores do a trick when reaching dangerous temp, and this could cause the CPU to run like a crappy i3 as overheated cores downclock to 1 Ghz or so. Your processor is a Bulldozer series, which is known for heavy power use (and high thermal output).

Check if your cores are cooled well enough to keep their stated max frequency even under real loads with programs like CPUz. This page tells more details, although it's for a slightly more modern processor of the same family.
It could be likely that you need to decrease your overclock or get better cooling to keep them from auto-downclocking.
Right now, with the memory issues I'm having now, I have the overclocking turned off, but I am slowly proceeding with a new project, and I have taken into consideration the fact that 1/2 of my cores are quite unused.

Once I positiviely identify the defective stick [I think I have] I will work on getting a replacement,but will move that stick to the very back to limit the number of crashes since my replacement will travel by mail.

I am going to install a VM of XP [because I have one I can use] and give it it's own keyboard and mouse to see if I can use it while someone else uses the rest of the Windows 7 machine. I am undecided on 1 or 2 cores for the VM, but I'm going to lock it into Core 8, and maybe core 7.
My System SpecsSystem Spec
.


12 Nov 2012   #24

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by x BlueRobot View Post
Keep testing in all the slots, the tests will take time, but least you will sure what RAM stick or DIMM slot is causing the problem.
Yes sir! [Bows, then salutes!]
My System SpecsSystem Spec
12 Nov 2012   #25

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by JoesMorgue View Post
I started testing before I read your post. I pulled two, moved my SSD, and added another HD to my system for VMs. Ran the test, and almost INSTANTLY, I got an error. Shutdown, swapped out the first stick and running again. 49% thru the test without errors. I'm guessing it's safe to say it's the stick no the slot...
The first stick is now in the back. [All in reference to the front of the case.] I am re-running Memtest86+ and the error came up almost instantly. When I swapped out the one stick, it went thru the entire test without errors.

Now what?
My System SpecsSystem Spec
12 Nov 2012   #26
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Run each memtest for 7 passes minimum, unless there is any errors, you can stop if so. I suspect the one RAM module is bad as you do. You might check it alone in each slot of the board to confirm.
My System SpecsSystem Spec
12 Nov 2012   #27

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x86 Service Pack 1 - Linux Mint Mate 14 x64
 
 

Test that RAM module in every slot, it does seem that one RAM module may be issue, if less RAM is being displayed by Windows.
My System SpecsSystem Spec
12 Nov 2012   #28

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Ok. Updates! I found something!

I tested each stick by itself. Three of the sticks said 400 MHz DDR-800, while the forth stick said 667 MHz, DDR-1334.

I think that is the issue...
My System SpecsSystem Spec
13 Nov 2012   #29

Win 7 Pro 64-bit 7601
 
 

Quote   Quote: Originally Posted by JoesMorgue View Post
Once I positiviely identify the defective stick [I think I have] I will work on getting a replacement,but will move that stick to the very back to limit the number of crashes since my replacement will travel by mail.
If you have 16 GB in 4x4GB banks you can safely live without 4GB for even a month. Unless you do stuff that specifically demands it, you won't be able to fill 8 GB of ram.
Quote:
The first stick is now in the back. [All in reference to the front of the case.] I am re-running Memtest86+ and the error came up almost instantly. When I swapped out the one stick, it went thru the entire test without errors.
The position of the memory stick is irrelevant unless you were testing the slots themselves, as all ram is going to be used regardless of the slot.
Ram tests are usually done on a single ram bank, just to make sure that if there are errors they 100% come from that bank.

Quote:
400 MHz DDR-800, while the forth stick said 667 MHz, DDR-1334
400 mhz ram? Isn't it a bit outdated for a Bulldozer processor?

And yes, mixing rams working at different speeds could result in issues. if the stick giving errors was the 667Mz one, try removing all the others and placing it in the first slot, then repeat the test.
If it comes out clean it was one of such "mixing ram issues", not a defective stick.

Quote:
I am undecided on 1 or 2 cores for the VM, but I'm going to lock it into Core 8, and maybe core 7.
I'd give it more, 3 or 4 cores if it can use them. Remember that each core is around half the power of a good quad-core's core.
My System SpecsSystem Spec
13 Nov 2012   #30

Windows 7 Ultimate x64/Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by bobafetthotmail View Post
Quote   Quote: Originally Posted by JoesMorgue View Post
Once I positiviely identify the defective stick [I think I have] I will work on getting a replacement,but will move that stick to the very back to limit the number of crashes since my replacement will travel by mail.
If you have 16 GB in 4x4GB banks you can safely live without 4GB for even a month. Unless you do stuff that specifically demands it, you won't be able to fill 8 GB of ram.
Well, the OS is x64, and I think the MB is too. Would that cause troubles because of the missing stick?

Quote:
Quote:
The first stick is now in the back. [All in reference to the front of the case.] I am re-running Memtest86+ and the error came up almost instantly. When I swapped out the one stick, it went thru the entire test without errors.
The position of the memory stick is irrelevant unless you were testing the slots themselves, as all ram is going to be used regardless of the slot.
Ram tests are usually done on a single ram bank, just to make sure that if there are errors they 100% come from that bank.

Quote:
400 MHz DDR-800, while the forth stick said 667 MHz, DDR-1334
400 mhz ram? Isn't it a bit outdated for a Bulldozer processor?

And yes, mixing rams working at different speeds could result in issues. if the stick giving errors was the 667Mz one, try removing all the others and placing it in the first slot, then repeat the test.
If it comes out clean it was one of such "mixing ram issues", not a defective stick.
The sticks I'm using are labeled as: 1866MHz, Corsair said the DRAM speed should be set at 1600 for my CPU. I bought them as a set of four from Amazon. I do not understand why it's showing at 400, or even 667.

Quote:
Quote:
I am undecided on 1 or 2 cores for the VM, but I'm going to lock it into Core 8, and maybe core 7.
I'd give it more, 3 or 4 cores if it can use them. Remember that each core is around half the power of a good quad-core's core.
It appears that XP Pro is only seeing a single processor. I'm want to wait until I get all the updates, but the Windows [XP] update part of Microsoft is having errors, so I think I'm stuck on SP1 for now...
My System SpecsSystem Spec
Reply

 8-Core, overclocked machine slow...




Thread Tools



Similar help and support threads for2: 8-Core, overclocked machine slow...
Thread Forum
Solved Slow LAN copy Speed on Win 7 64 machine Network & Sharing
Machine is slow to start-up after system updates General Discussion
windows 7 64bit duel core 1.3 mhz 450gig hd 4gigs ram Super Slow??! Performance & Maintenance
Core 'explorer' process extremely slow General Discussion
6 core computer so slow to load. General Discussion
Intel Gives Core i3, Core i5 Dual-Core Processors K0 Stepping Update News
Installing Win 7 on slow XP machine Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:48 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33