darkspearxz

Try turning down ur HTT, that will get it more stable.

__________________

Jarhead

Hey Tab, instead of giving you my settings, I'm going to give you the guide that helped me:

A8R32-MVP Deluxe BIOS Options Laid Out!
http://www.driverheaven.net/overcloc...-laid-out.html

With the right bios version this board is the best socket 939 crossfire board ever made. When I got mine it had 0311, which I flashed to a later 0602. The current version is 0711 IIRC, and it blows. Using an x11 multiplier I hit just over 3ghz, but it wasn't stable.

All bios versions available for download and a winflash utility.
http://support.asus.com/download/dow...Language=en-us

The settings Psyclone uses are his own - the memory setting are DDR specific, as is the processor stuff, but maybe you'll see some things that you've missed:


ADVANCED
_Jumper Free Configuration
_AI Overclocking__________________Manual
_CPU Frequency__________________285
_PCIE Frequency_________________100

_FID/VID Change__________________Manual
_Processor Frequency Multiple______X10
_Processor Voltage_______________1.550V
_DDR Voltage____________________2.90V
_VCORE Voltage_________________+200mV
_Northbridge Overvolt_____________Enabled
___Core Voltage__________________1.4V
___HT Bus Voltage________________1.4V
___PCIE Voltage__________________1.4V

_PEG Link Mode___________________Auto
_PEG Buffer Length________________Auto

_AI Clock SkewA__________________Auto
_AI Clock SkewB__________________Auto

_CPU Configuration
_GART Error Reporting_____________Disabled
_MTR Mapping____________________Continuous
_Cool N Quiet_____________________Disabled
_HT Link Speed___________________1 GHz

_Memory Configuration
_Memory Timing Mode_____________Limit
___Memclock Value_______________166
_MCT Timing Mode________________Manual
___CAS (CL)_____________________2.5
___TRAS________________________8
___TRP_________________________3
___TRCD________________________3
___TRRD________________________2T
___TRC_________________________7T
___TRFC________________________16T
___TRWT________________________2
_MCT Extra Timing Mode___________Manual
___TREF________________________7.8us
___DDR Input Strobe Skew_________Disabled
___Burst2Opt____________________Disabled
_User Configuration Mode__________Manual
___Read Preamble________________5.0ns
___Asyc Latency_________________7.0ns
___CMD-ADDR Timing_____________1T

_Bank Interleaving_________________Auto
_Burst Length_____________________8 Beats
_Software Memory Hole____________Disabled

_ECC Configuration
___DRAM ECC Enable______________Disabled
___L2 Cache BG Scrub_____________Disabled
___Data Cache BG Scrub___________Disabled

_Chipset
___VGA Priority___________________1st PCIE ->2nd PCIE
_HT Config
___HT Link Speed_________________1 GHz
___CPU:RD580-NB HT Link Width_____16 Bit

___RD580 HT Link Three State_______Disabled
___RD580 HT Drive Strength_________Optimal
___HT Receiver Comp. Ctrl__________Optimal

___RD580 HT PLL Control___________High Speed

_PCI-E Configuration
___PCIE GFX1 Link Width___________X16
___PCIE GFX2 Link Width___________X16

___P2P Writes Between GFX Ports___Disabled
___10% Extra Current Between GFX__Enabled
___10% Extra Current Between GPP__Enabled
___10% Extra Current Between SB___Enabled
___10% Extra Current Between GFX1_Enabled
___10% Extra Current Between GFX2_Disabled

All other settings are arbitrary.
This yields 2.85GHz on AMD 4000+ w/ 1GB Corsair TwinX PC3200
I arrived at the memory timings by changing [1 at a time] in BIOS, reboot, run Memtest, repeat.

The math looks like this:
(CPU Multiplier * HTT Frequency) / (CPU Multiplier/(Memory Multiplier)) = Memory Frequency

(10 X 285 = 2850) / (10 / .83333) = 237.50MHz (475MHz DDR)

I was never able to get this memory higher than 460+- in my old A8V Deluxe, so I'm sure that there's not much headroom for more of an oc for me...but, I ran the RAM benchmarks from PCMark05, as well as the new Everest Ultimate Edition, and got:
7160 Read 7106 Write 6179 Copy @ 43.8ns (That's close to 1000MB/s of bandwidth higher in each category than my highest on that A8V Deluxe (which was an EXCELLENT board!)
Needless to say, this A8R32-MVP is The Stuff Things Are Made Of!!!!!

--------**REFERENCE**---------------------------------------------------------
Memory Dividers________HT
200 = 1/1_____________1000 = 5x
183 = 9/10____________800 = 4x
166 = 5/6_____________600 = 3x
133 = 2/3_____________400 = 2x
100 = 1/2_____________200 = 1x


(CPU Multiplier * HTT Frequency) / (CPU Multiplier/(Memory Multiplier)) = Memory Frequency

__________________
I calculated the odds of this succeeding versus the odds I was doing something incredibly stupid... and I went ahead anyway.

Campaign for Liberty
JOIN THE REVOLUTION

If it's not coming out for the PC, it's dead to me.

Please die in a fire Rockstar, Remedy, EA, Microsoft, Atari, Activision... You will never get another dime from me.

tablet

The maximum and very stable that i can reach is 2.7.It's very difficult to go higher than this.