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Tom's Hardware > Forum > Overclocking > General Discussion > [Solved] Hit the wall OCing Linked/Sync'd

[Solved] Hit the wall OCing Linked/Sync'd

Forum Overclocking : General Discussion [Solved] Hit the wall OCing Linked/Sync'd

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madmankya   01-18-2011 at 08:22:53 PM

I've been trying different clock settings and speeds, and while I can attain greater speeds w/ stability unlinked, I cannot understand why I cannot post past 3.61G linked/sync'd. Anything higher than 1700 QDR halts the sysytem just before the memory check. Throwing more voltage did not seem to matter.

Q9550, EVGA 780i SLI FTW, 6gb Corsair Dominator (2,2,1,1), Corsair TX 950 PSU, H50 cpu cooler.

Below are the specifics:

Code :
  1. CPU Properties: 
  2.   CPU Type  QuadCore Intel Core 2 Quad Q9550 
  3.   CPU Alias  Yorkfield 
  4.   CPU Stepping  E0 
  5.   Engineering Sample  No 
  6.   CPUID CPU Name  Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz 
  7.   CPUID Revision  0001067Ah 
  8.   CPU VID  1.2250 V 
  9.  
  10.   CPU Speed: 
  11.   CPU Clock  3612.5 MHz (original: 2833 MHz, overclock: 28%) 
  12.   CPU Multiplier  8.5x 
  13.   CPU FSB  425.0 MHz (original: 333 MHz, overclock: 28%) 
  14.   Memory Bus  425.0 MHz 
  15.   DRAM:FSB Ratio  1:1 
  16.  
  17.   CPU Cache: 
  18.   L1 Code Cache  32 KB per core 
  19.   L1 Data Cache  32 KB per core 
  20.   L2 Cache  2x 6 MB (On-Die, ECC, ASC, Full-Speed) 
  21.  
  22.   Motherboard Properties: 
  23.   Motherboard ID  01/23/2009-132-YW-E178-F-6A61IEV1C-00 
  24.   Motherboard Name  EVGA E178 (2 PCI, 1 PCI-E x1, 3 PCI-E x16, 4 DDR2 DIMM, Audio, Dual Gigabit LAN, IEEE-1394) 
  25.  
  26.   Chipset Properties: 
  27.   Motherboard Chipset  nVIDIA nForce 780i SLI 
  28.   Memory Timings  5-5-5-15 (CL-RCD-RP-RAS) 
  29.   Command Rate (CR)  2T 
  30.   DIMM1: Corsair Dominator CM2X2048-8500C5D  2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz) 
  31.   DIMM2: Corsair Dominator CM2X2048-8500C5D  2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz) 
  32.   DIMM3: Corsair Dominator CM2X1024-8500C5D  1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz) 
  33.   DIMM4: Corsair Dominator CM2X1024-8500C5D  1 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz) 
  34.  
  35.   BIOS Properties: 
  36.   System BIOS Date  01/23/09  (Latest)
  37.   Video BIOS Date  09/16/09 
  38.   Award BIOS Type  Phoenix - AwardBIOS v6.00PG 
  39.   Award BIOS Message  Release Number I780SZ17 
  40.   DMI BIOS Version  6.00 PG 
  41.  
  42.   Graphics Processor Properties: 
  43.   Video Adapter  ATI Radeon HD 5850 1GB GDDR5 
  44.   GPU Code Name  Cypress Pro (PCI Express 2.0 x16 1002 / 6899, Rev 00) 
  45.   GPU Clock  157 MHz (original: 725 MHz) 
  46.   Memory Clock  300 MHz (original: 1000 MHz) 
  48. Sensor Properties: 
  49.   Sensor Type  Winbond W83627DHG (ISA 290h) 
  50.   GPU Sensor Type  Diode, Volterra VT1165 (ATI-Diode, 70h) 
  51.   Motherboard Name  EVGA E178 
  52.   Chassis Intrusion Detected  Yes 
  53.  
  54.   Temperatures: 
  55.   Motherboard  34 °C (93 °F) 
  56.   CPU  34 °C (93 °F) 
  57.   CPU #1 / Core #1  44 °C (111 °F) 
  58.   CPU #1 / Core #2  40 °C (104 °F) 
  59.   CPU #1 / Core #3  40 °C (104 °F) 
  60.   CPU #1 / Core #4  40 °C (104 °F) 
  61.   SPP  57 °C (135 °F) 
  62.   MCP  64 °C (147 °F) 
  63.   GPU Diode (DispIO)  48 °C (118 °F) 
  64.   GPU Diode (MemIO)  51 °C (124 °F) 
  65.   GPU Diode (Shader)  48 °C (118 °F) 
  66.   GPU VRM  39 °C (102 °F) 
  67.   Seagate ST3500320AS  29 °C (84 °F) 
  68.   WDC WD1002FAEX-00Y9A0  31 °C (88 °F) 
  69.   WDC WD3000GLFS-01F8U0  31 °C (88 °F) 
  70.  
  71.   Cooling Fans: 
  72.   CPU  1406 RPM 
  73.   nForce  3103 RPM 
  74.   GPU  1195 RPM (22%) 
  75.  
  76.   Voltage Values: 
  77.   CPU Core  1.32 V 
  78.   +3.3 V  3.18 V 
  79.   +5 V  4.92 V 
  80.   +12 V  11.99 V 
  81.   +5 V Standby  4.82 V 
  82.   VBAT Battery  3.06 V 
  83.   3.3V Dual  3.18 V 
  84.   FSB VTT  1.31 V 
  85.   DIMM  2.14 V 
  86.   GPU VRM  0.95 V 
  87.  
  88.   Current Values: 
  89.   GPU VRM  7.84 A 
  90.   Debug Info F  FF 78 FF / FF FF 
  91.   Debug Info T  31 34 34 / 255 
  92.   Debug Info V  A5 86 C7 C7 A4 C0 E3 (01) 
  93.   Debug Info I  C1 A025



Any insights as to why I am stuck at 3.6 L/S would be appreciated.


Message edited by madmankya on 01-18-2011 at 08:31:58 PM
Reply to madmankya
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wolfram23   01-18-2011 at 09:44:05 PM

Ram issue? Have you tried reducing the ratio or increasing RAM timings?


Message edited by wolfram23 on 01-18-2011 at 09:44:19 PM
Reply to wolfram23
madmankya   01-19-2011 at 02:45:40 AM

I can get it running well on "auto" ratio. Not sure what to try with the timings, any suggestions? Linked & sync'd is the problem.
Cor Dom DDR2 8500 1066, running 5-5-5-15-2T - 2.15v

Message quoted 1 times
Reply to madmankya
arthurh   01-19-2011 at 03:07:28 AM

madmankya wrote :

I can get it running well on "auto" ratio. Not sure what to try with the timings, any suggestions? Linked & sync'd is the problem.
Cor Dom DDR2 8500 1066, running 5-5-5-15-2T - 2.15v



I have a question and a suggestion.

What OP/SYS are you using?

Try removing the two 1G sticks and see if that helps.

CDQ's seem to not OC as well when all the memory slots are being used. If you must use the extra memory slots I would use the same value/mfg. memory as in the first two slots. 2 X 2G so you would have 8G total memory.

------------------------------ http://valid.canardpc.com/cache/banner/1091644.png
 Reply to arthurh
madmankya   01-19-2011 at 03:16:00 AM

win 98 (j/k) 7-64
OK, will try.

Message quoted 1 times
Message edited by madmankya on 01-19-2011 at 03:19:04 AM
Reply to madmankya
arthurh   01-19-2011 at 03:22:19 AM
Best answer

madmankya wrote :

win 98 (j/k) 7-64
All Ram is Cor Dom first 2 are 2gb second 2 ARE 1GB- settings are the same (unless I'm missing something).



The two different value memory could be what is holding you back.

Give it a shot with just the 2G sticks and see if you have better luck.

All it will cost you is the time to do it.:)

------------------------------ http://valid.canardpc.com/cache/banner/1091644.png
 Reply to arthurh
madmankya   01-19-2011 at 03:29:14 AM

BINGO! removed the two 1gb sticks and fired up Linked and sync'd first try at 3.72.
So, if I add 2x2gb of same exact ram (total of 8gb) should it still work or is the 4 slots the issue?

Message quoted 1 times
Reply to madmankya
arthurh   01-19-2011 at 03:45:59 AM

madmankya wrote :

BINGO! removed the two 1gb sticks and fired up Linked and sync'd first try at 3.72.
So, if I add 2x2gb of same exact ram (total of 8gb) should it still work or is the 4 slots the issue?



Now that is the question!

I do not know.:(

It will depend on your particular hardware. You should have a much better chance at achieving a higher OC than what you were experiencing.

These Q9550 will normally run ~ 3.83GHz with quality components but sometimes using all four slots do seem to limit your OC with them.

Using 1066 limits your theoretical FSB to 533(4.5GHz) assuming your M/BD has settings that high and you can keep that thing cool.

Good luck to what ever you decide. :sol:

------------------------------ http://valid.canardpc.com/cache/banner/1091644.png
 Reply to arthurh
madmankya   01-19-2011 at 04:49:21 AM

Thanks for the help. It may be hard to find that memory at a reasonable price too.

Message quoted 1 times
Reply to madmankya
arthurh   01-20-2011 at 03:38:08 AM

madmankya wrote :

Thanks for the help. It may be hard to find that memory at a reasonable price too.



Found this. Newegg doesn't seem to carry it any more.

------------------------------ http://valid.canardpc.com/cache/banner/1091644.png
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