Can't run 1T max mem and cpu at same time, please help!

Hello
I got 2x512 CH-5 at 3.2v and AMD A64 3000+ that does 2600 mhz at 1.6v.
When i use 1T setting i can't run max mem and cpu in same time.

For example( all settings with 2-2-2 and 3.2v for mem, HTT 3x):
1T CPU: 10x240 mhz , MEM: 240 mhz - prime fail ( afer 1 min )
1T CPU: 8x240 mhz, MEM: 240 mhz - prime works ( 1 h )

2T CPU: 10x240 mhz, MEM: 240 mhz - prime works ( 1 h )
2T CPU: 8x290 mhz, MEM: 241 mhz - prime works ( 1 h )

Ill also add that i tried two other cpus and it was same.
I tried to swap dimm slots and change voltage.

Here are my ram settings , but changeing them at 1T doesent help at all:
Dram Frequency Set(Mhz)= 200(Mhz)(1/01)
Command Per Clock(CPC)= DEPENDS
Cas Latency Control(tCL)= 2
RAS# to CAS# delay(tRCD)= 2
Min RAS# active timing(tRAS)=10
Row Precharge timing(tRP)= 2
Row Cycle Time(tRC)= 15
Row Refresh cyc time(tRFC)= 16
Row to Row Delay(tRRD)=02
Write Recovery Time(tWR)= 2
Write to read Delay(tWTR)= 2
Read to Write delay(tRTW)=4
Refresh Period(tREF)=3120
Write CAS# Latency(tWCL)= 1
_____________________________________________

DQS skew Contro= Increase Skew
DQS Skew Value= 43
DRAM Drive Strength= Level 1
Max Asynce lantency=7ns
Read Preamble time=5ns
Idle Cycle Limit= 016
Dynamic Counter= Enable
R/W Queue Bypass=16x
Bypass Max= 07x
32 byte Granulation=Disable(8burst)

reefa madness probably could tell u more cause he has an amd. but remember 1t is more stressful to the memory. so the faster u memory and cpu in 1t the more stress u place on it making failure more likely

Yeah but my CPU and MEM can handle that stress, but not at same time. While other peoples same setup's have no problem.

have you tried a different PSU?

Other people's setup's success is no guarantee that your's will do the same feat.

Well im sure its not psu. 1T doesent need more voltage then 2T.
Im sure coz i manage to solve my problem.
Seems that 10x and 9x multipliers arent usable.
With 8x i can use 1T , no problem for 3,5 h priming now at 8x320 ( ~2580 mhz and 235 mhz 2-2-2-6 mem ).
Too bad im hitting wall beyond 320 mhz

Change RAS# to CAS# delay to 3 see what happen's.

Jonspd seems you know what about youre talking.
Relaxing timings gived me some stability. Setting:
Trp: 3
Trcd: 3
Tras: 8
Give me 30 mins of prime95 stability at 325 mhz and 236 mhz mem ( baefore it failed after 2 mins )

Strange coz cpu can operate on this memory at lower htt with 245 mhz 2-2-2-6 without any problem. You have any idea why is that ?
And what you think about rising vdimm? This friday im doing psu voltmod and ill set 3.5 v for it, im wondering if that will alow me operate on 240 mhz 2-2-2 with high htt ?

Yes I'am pretty sure more voltage might help but then again AFAIK the ch-5 memory doesnt like as high of voltage as bh-5.

I though they like high voltage eaven more then bh5. I've seen some ch5 at 3.5v
with 260 2-2-2 1T. Winbond specify that max safe for ch5 is 3.6v , we will see
friday how they operate at 4v

I've never broke 3.5 myself but then again never really needed it.