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**gampamu** · 07-03-2009, 03:36 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

That certainly is amazing settings for DDR3's and decent memory performance. Is this better than what you can achieve at higher DRAM frequencies?

**creamsoda** · 07-03-2009, 03:59 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Originally posted by gampamu View Post

That certainly is amazing settings for DDR3's and decent memory performance. Is this better than what you can achieve at higher DRAM frequencies?

1121mhz is the highest I can go right now. The next RAM strap on the 333mhz latch will OC my RAM over 1400mhz, which I can't get stable.

Also, if you have a better DDR3 board, you can use a 525-533 FSB with 2.40b strap, which should give MUCH better read/write/copy than what my board can do.

On this EP45T-DS3R board, when u get around 500fsb, the whole board switches to a looser frequency latch, and it slows the RAM down a lot. Which is why I'm doing 467x9 instead of 500x8.5

**ghost707** · 07-03-2009, 04:07 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

I have been reading some articles about running the memory frequency slower (which is obviously the work-around for DDR3 and the P45 chipset) and it seems there is an advantage to be had with tighter ram timings (at lower frequency) and higher FSB frequency.

Looks like Creamsoda has it dialed in perfectly.

I got my CPU Stable @3.66GHZ @1.3V and was testing my RAM stable so far @1334 7 7 7 20 (FSB 420) and was getting 9107 MB/s read and about the same writing.

I like Creamsoda's set up and will play around with some timings at lower frequencies.

Excellent info Creamsoda - thanks so much for your input!

**creamsoda** · 07-03-2009, 04:34 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

No problem.

But to be honest, I don't think the DS3R board is a good board to showcase RAM speed lol, mainly because of the board switching to a slower NB frequency latch at around 500fsb.

But either way, your Corsair XMS3 is still faster than my RAM. I'm sure you'll get better bandwidth once you manage to get a better OC.

**ghost707** · 07-03-2009, 04:47 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Yeah,
The DS3R is a decent board - I was never really looking for major overclocking - just some medium-level OC with stability. With high ambient summer temps I am reluctant to push the NB too far - but your ram timings were a major find - tight timings, lower frequency and lower voltage with equal or greater throughput than higher frequencies - what's not to like.

Next year will be a i7 with some solid state drives. Mmmmmm solid state drives.

Edit to add: I will try some memory testing the next day or so and post a stable set up for ProfJim et al.

**gampamu** · 07-03-2009, 04:58 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Originally posted by creamsoda View Post

1121mhz is the highest I can go right now. The next RAM strap on the 333mhz latch will OC my RAM over 1400mhz, which I can't get stable.

Also, if you have a better DDR3 board, you can use a 525-533 FSB with 2.40b strap, which should give MUCH better read/write/copy than what my board can do.

On this EP45T-DS3R board, when u get around 500fsb, the whole board switches to a looser frequency latch, and it slows the RAM down a lot. Which is why I'm doing 467x9 instead of 500x8.5

On my DDR2 board, 2.66D seem to work better than 2.4B at 467FSB. I get a higher memory clock along with a notch lower PL (Static tRead). Not sure if it will work the same way for DDR3 boards, but I thought it is worth mentioning.

**creamsoda** · 07-03-2009, 05:18 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Worth mentioning indeed!

I just tried using 2.66D strap like you said, and it does give better scores in Everest o_o

I'll take screenshots in a bit

**ghost707** · 07-03-2009, 05:24 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

All info appreciated, thanks gampamu.

**ghost707** · 07-03-2009, 06:50 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

You guys have no idea how much time you have saved me.
Most excellent!

**ghost707** · 07-03-2009, 07:20 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Just a quick and dirty run through,
static tRead is good at 7 though.....so far.......

Attached Files

3.66GHZ_TEST_VCORE3V4.jpg (0, 116 views)

**creamsoda** · 07-03-2009, 08:57 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

make sure you guys have it stable first, otherwise OCCT "Large Data set" will error out due to unstable RAM.

I managed to get the 2.66D strap stable using 6-6-6-18, tRFC 44, tRD 8, DRAM voltage 1.76V

but now I'm gonna try to go further on this 2.66D strap and see what I can get out of it.

I'm going to try out 500x8.5 again.

**ghost707** · 07-04-2009, 05:03 AM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Let me know how it works out creamsoda.

Happy 4th of July!

Here is what I have discovered:

Memtest: If you buy it a drink and say nice things to it, it will pass just about any memory configuration you throw at it (if the configs are not completely out of whack). I think if Memetest passes - then the system will boot into Windows - but may not do much after that.

IBT: Was passing just about everything that Memtest was passing.

OCCT (AKA: ACME Blowtorches inc.): Unforgiving, torturing mofo of a program. Two thumbs up. If it passes OCCT, your system could probably run AutoCad and a database simultaneously with no problems.

Long story short, since I am trying to keep the FSB in the low 400's (and OCCT did NOT like the tREAD of 7) - I did some testing to see which would give me a better throughput.
So my testing took me to upping the RAM frequency and timings.

Tested the following specs first @430 FSB - Passed a 20 minute OCCT Large Data Set, then failed 3 minutes into the second test.

Dropped the FSB down to 425 and it passed three separate 20 minute tests.

Going to do a little more experimenting to see what I can see, but these settings are pretty stable:

Code:

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster .............: [ Auto ]
CPU Clock Ratio .....................: 8 X  
Fine CPU Clock Ratio.................: +0.5  
CPU Frequency .......................: 3.61GHZ (425x8.5)

Clock Chip Control
Standard Clock Control
CPU Host Clock Control...............: [ Enabled ]
CPU Host Frequency (Mhz) ............: 425  
PCI Express Frequency (Mhz) .........: 100 
C.I.A.2 .............................: [ Disabled ]

Advanced Clock Control [Press Enter]
CPU Clock Drive......................: [ 800 mV ]
PCI Express Clock Drive..............: [ 900mV ]
CPU Clock Skew (ps)..................: [ 0ps ]
MCH Clock Skew (ps)..................: [ 0ps ]

DRAM Performance Control
Performance Enhance..................: [ STANDARD ]
(G)MCH Frequency Latch...............: [ AUTO ]
System Memory Multiplier ............: 3.20B  
Memory Frequency (Mhz) ..............: 1360
DRAM Timing Selectable ..............: [ Manual ]

Standard Timing Control
CAS Latency Time.....................: 7 
tRCD ................................: 7 
tRP'.................................: 7 
tRAS.................................: 20 

Advanced Timing Control
tRRD.................................: 5 
tWTR.................................: 5 
tWR..................................: 9 
tRFC.................................: 65 
tRTP.................................: 5 
Command Rate (CMD) ..................: 2


Channel A
Static tRead Value...................: 8
tRD Phase0 Adjustment................: 0 [ AUTO ]
tRD Phase1 Adjustment................: 0 [ AUTO ]
tRD Phase2 Adjustment ...............: 0 [ AUTO ]
tRD Phase3 Adjustment................: 0 [ AUTO ]
Trd2rd(Different Rank)...............: 9 [ AUTO ]
Twr2wr(Different Rank)...............: 7 [ AUTO ]
Twr2rd(Different Rank)...............: 8 [ AUTO ]
Trd2wr(Same/Diff Rank)...............: 8 [ AUTO ]

Channel B
Static tRead Value...................: 8
tRD Phase0 Adjustment................: 0 [ AUTO ]
tRD Phase1 Adjustment................: 0 [ AUTO ]
tRD Phase2 Adjustment ...............: 0 [ AUTO ]
tRD Phase3 Adjustment................: 0 [ AUTO ]
Trd2rd(Different Rank)...............: 9 [ AUTO ]
Twr2wr(Different Rank)...............: 7 [ AUTO ]
Twr2rd(Different Rank)...............: 8 [ AUTO ]
Trd2wr(Same/Diff Rank)...............: 8 [ AUTO ]


Motherboard Voltage Control
Voltage Type...............
CPU
CPU Vcore............................: 1.31250V
CPU Termination�.....................: 1.260V
CPU PLL..............................: 1.570V
CPU Referen..........................: 0.760V [ AUTO ]


MCH/ICH
MCH Core.............................: 1.240V 
MCH Reference........................: 0.760V [ AUTO ]
MCH/DRAM Ref.........................: 0.750V [ AUTO ]
ICH I/O......................�.......: 1.570V 


DRAM
DRAM Voltage ........................: 1.800V
DRAM Termination ....................: 0.750V [ AUTO ]

Ch-A DATA VRef.......................: 0.750V [ AUTO ]
Ch-B DATA VRef.......................: 0.750V [ AUTO ]
Ch-A Address VRef....................: 0.750V [ AUTO ]
Ch-B Address VRef....................: 0.750V [ AUTO ]

Advanced Settings
Limit CPUID Max. to 3...............: [ DISABLED ]
No-Execute Memory Protect...........: [ ENABLED ]
Load-Line Calibration...............: [ DISABLED ]
CPU Enhanced Halt (C1E).............: [ DISABLED ] 
CPU Thermal Monitor 2(TM2) .........: [ ENABLED ]
CPU EIST Function...................: [ DISABLED ] 
Virtualization Technology...........: [ ENABLED ] 

USB Legacy Support..................: [ DISABLED ]

Attached Files

3.66GHZ_TEST_VCORE3V5.jpg (0, 97 views)

**creamsoda** · 07-04-2009, 08:17 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

I just finished stress testing my new OC. Here are a couple screenshots.

4.25GHz (500x8.5) on GA-EP45T-DS3R

and here are some memory benchmarks for those who care lol

**ghost707** · 07-04-2009, 09:36 PM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

Excellent creamsoda.
Hey Gampamu, how are you getting along on testing?

I have been perusing the web to see what kind of testing other sites were getting, came across an article at Extremetech where they could not get RAM past 1200 with a QX9770, although the other CPU's worked fine - don't know if it was a one time glitch or what.
But I have come across other articles where they could not get the RAM stable past 1400.

Looking at some benchmarks on other systems, I figured I have the throughput comparable to system running atDDR3 1600 @ 9 9 9 24 - which ain't screaming fast - but still decent, and I am meeting the specs at 1.8V stable as opposed to 1.9V.

4GB DDR3-1600 in LGA775 Systems: New Look (page 6) - X-bit labs

New Core i7 CPUs: Intel's Tiny Step Up - Test Systems and Benchmarks - CPUs, Boards & Components by ExtremeTech

**gampamu** · 07-05-2009, 10:07 AM

Re: GA-EP45T-DS3R DDR3-1600 So far so good

I have been concentrating on FSB overclocks for the last few days. 480 stable so far and working towards 490. These QX chips are not known for very high FSB so it's likely I am nearing the limit. Well, only one way to find out

I am glad you were able to find a stable setting. But if you are able to run stable at 425FSB but not at 430, chances are good that you will benefit from a MCH reference tweak. While running a stress test (Prime95 or OCCT) increase the MCH reference one notch at a time with the ET6 until errors are reported, and then decrease the setting until the same thing happens. The setting that is closest to the midpoint between the two settings is where you want the MCH reference to be. To set the value correctly in BIOS, first lower the VTT (CPU Termination) to 1.2V, set the MCH reference next, and then raise the VTT back up to the original. With the optimized MCH reference you should also be able to get by with lower VTT and MCH core settings.

LSD's explanation on ET6 vs BIOS reference voltages: http://forums.tweaktown.com/f69/how-...asytune-29746/

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