Need to Run 4X512 OCZ PC4000 VX On DFI?

[hifi]

Then look no further...I just got this config working well today, so far 12 hours prime stable and still churning.

Thought these timings would be helpful to those looking to attempt the same thing.

Things to concider though: Bios is the 623-3, Processor is a San Diego (thus new E stepping rev and memory controller enhanced so mileage may vary for Hammer/Winchester etc types), This is a DFI board.

Basically all I had to do from running 2X512 => 4X512 is set CPC to "disable" (Therefore 2T timing instead of 1T) and set Read Preamble to "6.0 nanoseconds" from "auto".

These are my current settings with 4X512:


Genie BIOS Settings:

FSB Bus Frequency - 250
LDT/FSB Frequency Ratio - x4.0
CPU/FSB Frequency Ratio - x11.0
PCI eXpress Frequency - 100Mhz

CPU VID StartUp Value - 1.5v

CPU VID Control - 1.320v
CPU VID Special Control - Above VID * 123%
LDT Voltage Control - 1.30v
Chip Set Voltage Control - 1.50v
DRAM Voltage Control - 3.30v

DRAM Configuration Settings:

DRAM Frequency Set - 200 (DRAM/FSB:1/01)
Command Per Clock (CPC) - Disabled
CAS Latency Control (Tcl) - 02
RAS# to CAS# delay (Trcd) - 02 Bus Clocks
Min RAS# active time (Tras) - 06 Bus Clocks
Row precharge time (Trp) - 02 Bus Clocks
Row Cycle time (Trc) - 07 Bus Clocks
Row refresh cyc time (Trfc) - 16 Bus Clocks
Row to Row delay (Trrd) - 02 Bus Clocks
Write recovery time (Twr) - 03 Bus Clocks
Write to Read delay (Twtr) - 02 Bus Clocks
Read to Write delay (Trwt) - 03 Bus Clocks
Refresh Period (Tref) - 3120 Cycles
Write CAS Latency (Twcl) - Auto
DRAM Bank Interleave - Enabled

DQS Skew Control - Auto
DQS Skew Value - 0
DRAM Drive Strength - Level 8
DRAM Data Drive Strength - Level 2
Max Async Latency - 7.0 nanoseconds
Read Preamble Time - 6.0 nanoseconds
IdleCycle Limit - 16 Cycles
Dynamic Counter - Disable
R/W Queue Bypass - 16 x
Bypass Max - 07 x
32 Byte Granularity - Disable(4 Bursts)

__________________
Foundation: Lian-Li PC1100 Plus
Innards: DFI-NF4 Ultra-D (Does anyone else think that the "Lanparty" name sounds a wee bit light in the loafers?) 623-3 BIOS
CPU: A64 3700+ San Diego @2750 1.5Vcore
V/C: XFX GeForce 7800GTX (490/1300)
Drives: 2X WD 74GB Raptors Raid 0, 1X 160GB Seagate
S/C: Audigy Platinum
Memory: OCZ PC-4000 VX Gold 4X512 (@250 FSB 2,2,2,6 CPC Disabled 3.3Vdimm)
Power: Enermax 600W
Cooling:EXOS AL 300CPU/L06GPU

[Sixpac_XP]

What is your overall cpu mhz?

got any cpu-z screen shots? I am interested as I just got this cpu and am looking into get that DFI motherboard and maybe that ram.

[andy1984]

What is your overall cpu mhz?

.

is 250x11 that hard

i'm interested, your ram speed says 200mhz, it also says 1 to 1 when your fsb is 250mhz is this a mistake or am i reading it wrong?

[hifi]

What is your overall cpu mhz?

got any cpu-z screen shots? I am interested as I just got this cpu and am looking into get that DFI motherboard and maybe that ram.

http://www.dfi-street.com/forum/show...0&postcount=23

All benches cpu-z, everest, 3DMark2001-05 etc are in this thread, but for only the 512X2 config for the VX's. I'll update that OC database with the 4X512 config listed above as soon as I have time to run through all the benches...currently it is finishing up its Prime95 marathon...

hifi

[hifi]

is 250x11 that hard

i'm interested, your ram speed says 200mhz, it also says 1 to 1 when your fsb is 250mhz is this a mistake or am i reading it wrong?

250X11 isn' t that difficult...no, but many individuals are having difficulty running with all dimm slots populated, especially in the 512X4 configuration...and the VX memory is difficult to work with in the first place due to the tighter timings and higher Vdimm requirments.

As for question #2:

That specifies the 1:1 settings at default, the true speed is determined by the HTT setttings (in this case 250) See the link above for further detail in CPU-Z or click here: http://i22.photobucket.com/albums/b3...U_Mem_3D01.jpg

The majority of the Athlon64 platforms are set up this way in the bios...in fact, I haven't seen one that isn't similar to this.

hifi

[Sixpac_XP]

wow.. looks like Hifi put some serious cash into the system..

my 6800 GT ain't looking so nuff no more..

[andy1984]

250X11 isn' t that difficult...no,

That was aimed at the guy who asked what the overall speed was

As for question #2:

That specifies the 1:1 settings at default, the true speed is determined by the HTT setttings (in this case 250) See the link above for further detail in CPU-Z or click here: http://i22.photobucket.com/albums/b3...U_Mem_3D01.jpg

The majority of the Athlon64 platforms are set up this way in the bios...in fact, I haven't seen one that isn't similar to this.

hifi

So basically the stated ram ratio is correct but the stated ram speed is wrong, or is the stated ram speed the default ram speed>?

[hifi]

So basically the stated ram ratio is correct but the stated ram speed is wrong, or is the stated ram speed the default ram speed>?

That is only an indicator of the divider being used...if set 1:1 it reads 200 (and when 1:1 the memory speed rises syncronous with the FSB(HTT in this case) however, there are numourous other divider settings, one for 180(9:10 divider) one for 166 (5:6 divider) etc.

So yes it is the correct way to look at it. Remember, the memory controler is integrated into the chip on the Athlon 64 series processors. So the ability to state operational speeds is a bit different. Once you use the system for a bit, it does not take long to figure out though...

hifi

[andy1984]

so basically its just telling you the default ram speed then

[hifi]

so basically its just telling you the default ram speed then

No. It is telling you what speed you are running at default with whatever divider you are utilizing (so 1:1 = 200MHz in this case)

Check out this OC database @dfi-street.com for more information, I may not be explaining this as well as I could...also the link below that shows all Athlon 64 DRAM related settings and their respective definitions (Available in DFI Bios).

hifi

http://www.dfi-street.com/forum/show...t=10195&page=2

http://www.dfi-street.com/forum/showthread.php?t=11397

[andy1984]

I'm lookin at the pic of the bios now and it still makes no sense to me it says fsb(mhz):220, then 2 screens lower it says dram frequency set(mhz) 200 dram/fsb 1/1

how is 200/220 1/1

that doesnt make sense

[hifi]

[andy1984]

You should post that 3dmark05 score on the 3dmark05 thread, it gives you the top single card score

[hifi]

It's over 9000 with 2X512 though the CPC @2T limits your memory bandwidth ever so slightly, but real-world impact is neglegable at best...

[hifi]