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[OC log] (\/)0n0L17(-) II
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06-12-2007 08:53PM#1Ok well I finally got my RAM replaced from HWV. Funny thing is they didn't return any of my emails for 3 weeks then they sent my out a kit of RAM thats actually better than the one I sent them?
I used to have a 4GB kit of Mushkin HP2-6400, they've sent me out a 4GB kit of XP2-6400. Basically the same but with tighter timings.
So I thought I wouldn't be stupid like last time and just start ramping up voltages and clocks and seeing if they work, i'm going to try and OC this rig methodically and see what my results are. My rig is a fairly common high/mid end machine so hopefully someone will find this usefull.
The rig i'm overclocking is:
(\/)0n0L17(-) II
CPU: QX6700 w/ Tuniq Tower lapped
RAM:4GB Mushkin XP2-6400 @ 4-4-4-12 2T
Mobo: eVGA 680i-A1
GPU: eVGA 8800 GTX @ 620/1100
HDD1: 2x320GB WD SE16 RAID0
HDD2: 500GB Samsung Spinpoint
Soundcard: X-FI Fatal1ty
PSU: OCZ 700w GX
Optical: SATA DVD-ROM 18x
Case: P180b
Here is my process for overclocking. I'll be leaving the FSB unlinked for this
1: Find the limits of the RAM:
This involves setting the timings to their rated settings and stepping up the Mhz of the FSB 10 at a time until I fail memtest86 before 8 hours. Once I fail i'll up the voltages and continue. I'll only be going up as far as 2.0v
2: Find the limits of the CPU:
This involves loosening the RAM timings and dropping the RAM clocks down, then uping the CPU's FSB 10Mhz at a time and testing for 8 hours in OCCT. Once it fails i'll up the voltages and test again, i'll do this up as far as 1.4v
3: Find the best balance between RAM and CPU:
This area is always fiddly, i'll try testing the RAM and CPU at their limits together and see if i'm stable. If not i'll increase the SPP, MCP, FSB and SPP<->MCP volts and retest. If I can't get it stable i'll drop both the cpu and ram clocks by 10mhz each until i'm stable.
4: As a final test i'll run an 8hour run of rthdribl (or maybe the crysis benchmark) and OCCT to make sure everything is stable including my GPU overclocks.
Here are some screenshots of the BIOS, feel free to give me advice on settings which are important and onces I should ignore.
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:mad: ok a weird thing is happening now, I set the RAM FSB to 820Mhz and ran memtest86, it passed 8 hours BUT... I don't think my FSB settings are being applied? CPU-Z and Everest are still picking up my RAM FSB as only 800Mhz?
So I set the Memory Clock Mode to "linked", set the memory ratio to 1:1 and dropped the FSB to 820. I then rebooted and in post I now get "System has entered safe mode"... wth is going on???
Anyone any ideas?
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Ah only just seen this now. And i was about to blame ntune. Had the exact same problem myself. Use riva tuner, atleast you can overclock the shaders too now
Yeah just got the latest version. Luckily there are some released signed drivers for it so no need to turn driver chechking off when rebooting.
Having some problems now with the RAM. Its failing after 7 hours at 854Mhz
I've lowered the timings a bit to see if I can get the clocks higher, although I'd be surprised if I can hit 900Mhz on this kit at 2.0v. I'd go to 2.1v but I haven't tracked down what killed my last set and I don't really want to kill this set right before the xmas holidays :rolleyes:
CPU Multiplier: 10
FSB – Memory Clock Mode: Unlinked
CPU FSB Mhz: 1066
RAM FSB Mhz: 854
FSB Memory Ratio: Auto
Timings
TCL: 4
TRCD: 4
TRP: 4
TRAS: 12
CMD: 2
TRRD: 3
TRC: 24
TWR: 5
TWTR: 14
TREF: Auto
Volts
CPU Core: 1.29
CPU FSB: 1.2
Memory: 2
Nforce SPP: 1.25
Nforce MCP: 1.5
HT nForce SPP <-> MCP: 1.2
Time Ran (hrs): 7.2
Memtest86: FAIL0 -
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Ok getting a REALLY weird issue with overclocking the RAM (although nobody will probably read this :rolleyes:) My performance is DROPPING to my INCREASES in FSB (using EVEREST to bench)??? But the sticks are still 100% stable after 8 hours of memtest86???
i.e.
@ 427Mhz -
* mem read: 7600 MB/s
* mem write: 4830 MB/s
* mem copy: 5368 MB/s
@ 444Mhz -
* mem read: 7411 MB/s
* mem write: 4828 MB/s
* mem copy: 5344 MB/s
@ 457Mhz -
* mem read: 7358 MB/s
* mem write: 4852 MB/s
* mem copy: 5400 MB/s
Very very odd??? anyone any ideas, i've never seen this issue before when overclocking.
CPU Multiplier: 10
FSB – Memory Clock Mode: Unlinked
CPU FSB Mhz: 1066
RAM FSB Mhz: 915
FSB Memory Ratio: Auto
Timings
TCL: 5
TRCD: 5
TRP: 5
TRAS: 12
CMD: 2
TRRD: 3
TRC: 24
TWR: 5
TWTR: 14
TREF: Auto
Volts
CPU Core: 1.29
CPU FSB: 1.2
Memory: 2
Nforce SPP: 1.25
Nforce MCP: 1.5
HT nForce SPP <-> MCP: 1.2
Time Ran (hrs): 8.0
Memtest86: PASS0 -
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try giving it some more voltage just a small bit and see what heppens.
I don't think thats it, i've been reading around and supposedly this drop in performance happens when the northbridge strap increases from 1066 to 1333. Supposedly this happens when the FSB goes over a certain value.
Heres a graph I found on this particular problem.
CPU Multiplier: 10
FSB – Memory Clock Mode: Unlinked
CPU FSB Mhz: 1066
RAM FSB Mhz: 934
FSB Memory Ratio: Auto
Timings
TCL: 5
TRCD: 5
TRP: 5
TRAS: 12
CMD: 2
TRRD: 3
TRC: 24
TWR: 5
TWTR: 14
TREF: Auto
Volts
CPU Core: 1.29
CPU FSB: 1.2
Memory: 2
Nforce SPP: 1.25
Nforce MCP: 1.5
HT nForce SPP <-> MCP: 1.2
Time Ran (hrs): 9.0
Memtest86: PASS
EVEREST Bench results: (OMG :mad: stop going down!!!)
*mem read: 7227 MB/s
*mem write: 4827 MB/s
*mem copy: 5363 MB/s0 -
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Ok I give up it seems some other setting on the motherboard that isn't visable in the BIOS is fighting against me and defeating whatever overclock I give these sticks. I think the reason i'm not failing memtest86 at these speeds is that they are still running way below their rated bandwidth. At DDR1000 i'm still running under the bandwidth I was at at DDR850.
I'm going to cut my losses and start testing these sticks linked and with the divider set to sync mode (i.e. DDR for RAM, QDR for CPU)
Also nibble, your comment makes no sense to me. Tight timings will give me more bandwidth so i'm not sacrificing one for the other. If you mean i'll get more bandwidth from a higher clock I think i've already proved that with my board (at least with the clocked mode set to unlinked) this isn't so.
Also why do people keep telling me to up my volts??? Volts are only going to affect stability, as my sticks are stable I don't need to give them more volts yet. Upping the voltages needlessly is just going to create more heat.
@ 500Mhz
*mem read: 7356 MB/s
*mem write: 4834 MB/s
*mem copy: 5440 MB/s
CPU Multiplier: 10
FSB – Memory Clock Mode: Unlinked
CPU FSB Mhz: 1066
RAM FSB Mhz: 1000
FSB Memory Ratio: Auto
Timings
TCL: 5
TRCD: 5
TRP: 5
TRAS: 12
CMD: 2
TRRD: 3
TRC: 24
TWR: 5
TWTR: 14
TREF: Auto
Volts
CPU Core: 1.29
CPU FSB: 1.2
Memory: 2.0
Nforce SPP: 1.25
Nforce MCP: 1.5
HT nForce SPP <-> MCP: 1.2
Time Ran (hrs): 11.2
Memtest86: PASS0 -
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For a quick memory test, run a 15x loop of test 5 & 10x of test 6, will take about 1.5hrs. These are the most intensive tests that will produce the most fails quickly. Ya must have great patience running them all night
Have ya tries 2.2V with the tighter timings? They're d9 chips & do actually need it & can cope with it0 -
PogMoThoin wrote: »For a quick memory test, run a 15x loop of test 5 & 10x of test 6, will take about 1.5hrs. These are the most intensive tests that will produce the most fails quickly. Ya must have great patience running them all night
Have ya tries 2.2V with the tighter timings? They're d9 chips & do actually need it & can cope with it
i'm in no rush, i'd rather get it right then end up breaking them. I run the testing overnight, and then again when i'm in work, so it really isn't eating into my time at all. Plus it would only bother me if I needed the performance for some game i'm playing which I don't
Also, I've found the failing is happening in test 4
I'm going to have to rethink how i'm going to overclock this board as you can't really ever seperate the ram from the cpu. The strap changes affect both of them, plus the 680i boards suffer from having FSB holes where the system just won't boot at one clock, yet a higher clock will. Its the oddest board i've ever had to overclock on.
Plus for some reason, my system enters safe mode when I enable linked mode with a divider of 1:1... it really does not like it, i've tried a few different clock settings and always the same.0 -
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PogMoThoin wrote: »Told ya
Have a try at 4-4-3-10 @ 2.2v. Or use memset & test with orthos.
well it runs stock 4-4-4-12 @ 1.9v, it actually runs stable at 4-4-3-12 @ 2.05v but i'm sick of voltage being an issue so i've just upped to 2.2v as I ran memtest overnight at this voltage and I wasn't getting any errors.
The next timings I'll be trying are:
4-4-3-10
4-3-3-10
4-3-3-9
then if i'm lucky 1T, but I'm not holding my breath for that as there isn't many 4GB kits that can handle 1T.0
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