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DeFJaE

Final OC X2 3800 @ 2.6

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Ok guys I finally reach the end of my testing and research. Alot of hours was put into this so I hope you guys enjoy it. Let this be a guide or reference to those who are curious as to what these chips can do. By far this little adventure was nothing short of amazing and a whole lot of WOW :eek: I'm pretty sure if I put a little more effort I might be able to hit 3.0, but we'll save that for the next adventure and when I get a better sticks. I will post screen shots upon request.

 

OC @ 2.6

 

Sandra Sisoft

 

CPU Arithmetic:

Dhrystone ALU - 21998

Whestone FPU/iSSE2 - 8242/10736

 

Memory Bandwidth:

Ram Bandwidth Int Buff'd iSSE2 - 6224

Ram Bandwidth Float Buff'd iSSE - 6184

 

EVEREST

 

Memory Read - 6592

Memory Write - 6735

Memory Copy - 5672

Memory Latency - 47.8

 

CPU Queen - 5003

CPU Photoworxx - 20622

CPU ZLib - 30429

FPU Julia - 2935

FPU Mandel - 4343

FPU SinJulia - 2704

 

OC 2.8ghz

 

Sandra Sisoft

 

CPU Arithmetic:

Dhrystone ALU - 23686

Whestone FPU/iSSE2 - 8879/11564

 

Memory Bandwidth:

Ram Bandwidth Int Buff'd iSSE2 - 5939

Ram Bandwidth Float Buff'd iSSE - 5944

 

EVEREST

 

Memory Read - 6131

Memory Write - 6227

Memory Copy - 5789

Memory Latency - 50.1

 

CPU Queen - 5386

CPU Photoworxx - 19844

CPU ZLib - 32967

FPU Julia - 3157

FPU Mandel - 4675

FPU SinJulia - 2912

----------------------------

BFG 7800GT OC @ Core 470 - Mem 1120

 

3DMark03 @ 2.6 - 15364

3DMark05 @ 2.6 - 7001

-----------------------------

BFG 7800GT OC @ Core 470 - Mem 1120

 

3DMark03 @ 2.8 - 17112

3DMark03 @ 2.8 - 8038

 

BIOS Settings @ 2.6

 

CPU Speed:

CPU Clock 2600.3 MHz (original: 2000 MHz, overclock: 30%)

CPU Multiplier 10.0x

CPU FSB 260.0 MHz (original: 200 MHz, overclock: 30%)

Memory Bus 216.7 MHz

DRAM:FSB Ratio CPU/12

 

Memory Timings:

CAS Latency (CL) 2T

RAS To CAS Delay (tRCD) 3T

RAS Precharge (tRP) 3T

RAS Active Time (tRAS) 6T

Row Cycle Time (tRC) 8T

Row Refresh Cycle Time (tRFC) 16T

Command Rate (CR) 1T

RAS To RAS Delay (tRRD) 2T

Write Recovery Time (tWR) 2T

Read To Write Delay (tRTW) 3T

Write To Read Delay (tWTR) 2T

Write CAS Latency (tWCL) 1T

Refresh Period (tREF) 200 MHz 15.6 us

DQS Skew Control Disabled

DRAM Drive Strength Weak

DRAM Data Drive Strength 1 (50% Reduction)

Max Async Latency 7 ns

Read Preamble Time 6.5 ns

Idle Cycle Limit 256

Dynamic Idle Cycle Counter Disabled

Read/Write Queue Bypass 16

Bypass Max 7

32-byte Granularity Disabled

 

Sensor Properties:

Sensor Type ITE IT8712F (ISA 290h)

GPU Sensor Type Diode (NV-Diode)

Motherboard Name DFI LANParty UT nF4 SLI-DR Expert

Chassis Intrusion Detected Yes

 

Temperatures:

CPU 29 °C (84 °F) - Load is about 38c

Chipset 50 °C (122 °F)

PWM 45 °C (113 °F)

GPU Diode 42 °C (108 °F)

Seagate ST380011A 34 °C (93 °F)

WDC WD400BB-00JKC0 41 °C (106 °F)

WDC WD3000JD-00KLB0 34 °C (93 °F)

 

Cooling Fans:

System 1974 RPM

Chipset 4327 RPM

 

Voltage Values:

CPU Core 1.33 V

+3.3 V 3.26 V

+5 V 4.92 V

+12 V 12.16 V

+5 V Standby 4.92 V

 

BIOS Settings @ 2.8

 

CPU Properties:

CPU Type DualCore AMD Athlon 64 X2

CPU Alias Manchester S939

CPU Stepping BH-E4

CPUID CPU Name AMD Athlon 64 X2 Dual Core Processor 3800+

CPUID Revision 00020FB1h

 

CPU Speed:

CPU Clock 2800.8 MHz (original: 2000 MHz, overclock: 40%)

CPU Multiplier 10.0x

CPU FSB 280.1 MHz (original: 200 MHz, overclock: 40%)

Memory Bus 200.1 MHz

DRAM:FSB Ratio CPU/14

 

Temperatures:

CPU 30°C (84 °F) - Load is about 38c

Chipset 47 °C (117 °F)

PWM 46 °C (115 °F)

GPU Diode 43 °C (109 °F)

Seagate ST380011A 32 °C (90 °F)

WDC WD400BB-00JKC0 39 °C (102 °F)

WDC WD3000JD-00KLB0 33 °C (91 °F)

 

Cooling Fans:

System 2096 RPM

Chipset 3924 RPM

 

Voltage Values:

CPU Core 1.39 V

+3.3 V 3.26 V

+5 V 4.92 V

+12 V 12.16 V

+5 V Standby 4.92 V

VBAT Battery 3.10 V

 

Memory Timings:

CAS Latency (CL) 2.5T

RAS To CAS Delay (tRCD) 3T

RAS Precharge (tRP) 3T

RAS Active Time (tRAS) 7T

Row Cycle Time (tRC) 8T

Row Refresh Cycle Time (tRFC) 16T

Command Rate (CR) 1T

RAS To RAS Delay (tRRD) 2T

Write Recovery Time (tWR) 2T

Read To Write Delay (tRTW) 3T

Write To Read Delay (tWTR) 2T

Write CAS Latency (tWCL) 1T

Refresh Period (tREF) 200 MHz 15.6 us

DQS Skew Control Disabled DRAM Drive Strength Weak

DRAM Data Drive Strength 1 (50% Reduction)

Max Async Latency 7 ns

Read Preamble Time 8.0 ns

Idle Cycle Limit 256

Dynamic Idle Cycle Counter Disabled

Read/Write Queue Bypass 16

Bypass Max 7

32-byte Granularity Disabled

 

Disclaimer

Let this be a guide and reference, but by any means I guarantee these numbers and settings will reflect or work on a similar hardware. Final OC are tested with OCCT 30 min. test, Memtest Test No.5 40 pass No error, and 10hrs x2 prime95 In place large fft. All benchmarks are performed in my best abilities and knowledge.

 

This would not be possible with out these GREAT Guides:

http://www.hardforum.com/showthread.php?t=888001

http://www.dfi-street.com/forum/showthread.php?t=20823

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Lucky bugger. Was on stock up to 2.55 ghz, but have just had to up it to 1.375 to prime at 2.6. Still a happy chappy.

 

RLM

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Thank you sir.

 

My next goal now is trying to get Windows to boot up with 10/9 dividers. With my ram I might be pushing it to it's limits, but thats what we all do. I tried few times, relaxed all my timings change my dram volt to 2.90 all smokes, but no cigar. This is a bit frustrating specially when you hit a break wall. Did some further searching and reading, doesnt look to promissing. When I was at 2.4 I was able to set my divider to 10/9 (180) Dram Freq is 218mhz. Since now that I am at 2.6 doing 10/9 (180) this brings my Freq to 236mhz. It only make sense that I had to drop it down to 166 which is about Freq. of 216mhz. This is the same range I was at 2.4.

 

With that said, my ram is only able to do no more than 220mhz. I'm shooting for the stars hear, but I will give it a few more shot.....

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What timings and voltage have you tried on your ram so far?

 

This is the last timings i tried it on. Maybe i can loosen them up abit more??

 

This is at 2.90v

 

CAS Latency (CL) 3T

RAS To CAS Delay (tRCD) 3T

RAS Precharge (tRP) 3T

RAS Active Time (tRAS) 8T

Row Cycle Time (tRC) 8T

Row Refresh Cycle Time (tRFC) 17T

Command Rate (CR) 1T

RAS To RAS Delay (tRRD) 2T

Write Recovery Time (tWR) 2T

Read To Write Delay (tRTW) 3T

Write To Read Delay (tWTR) 2T

Write CAS Latency (tWCL) 1T

Refresh Period (tREF) 200 MHz 15.6 us

DQS Skew Control Disabled

DRAM Drive Strength Weak

DRAM Data Drive Strength 1 (50% Reduction)

Max Async Latency 7 ns

Read Preamble Time 6.5 ns

Idle Cycle Limit 256

Dynamic Idle Cycle Counter Disabled

Read/Write Queue Bypass 16

Bypass Max 7

32-byte Granularity Disabled

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Ok here's an update. Curiousity kept me up all night, since i was able to hit 2.6 with ease, why not 2.8. So I went on and tried pushing my chip abit more, further than I initially would like. I kept the vcore at default, all I had to change is mem divider. Not knowing whether it would even boot or even perform benchmark at that, I went on and gave it a shot. With surprise, amazement and a bit of :confused: I was able to boot to windows, perform some quick benchmark and write this thread. My NF4 chipset temp is too high for my liking (52c).

 

Question is it normal for this chip to be OC'ed at 2.8 on it's default Vcore? Now I am not saying it is stable, but wow this is something different. Pls. someone shead a light on this...

 

I can try to post some screen shots of some benchmarks, cpuz, everest, sandra and even some 3dmarks, but I don't have hostings for the pics. If someone can help in this dept. I can post some screenies for you guys.

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I had mine running @2.6 with no problems with prime95 etc... when my daughter plays the Sims2 game it kept freezing up. I had to low it down 2.55 but it still kept freezing up every now and then not as much as @2.6. So I decided to low it down 2.50Mhz and it's running without freezing up since. Anybody has any idea?

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No way will that chip be stable @ 2.6ghz with stock v.core

 

Mine needs 1.5v to be rock dual prime solid @ 2.7ghz, 2.9ghz is bootable but no windows, and 3.0ghz is asking for trouble. :P

 

try setting the v.core to 1.5v in the bios, if not raise it some more, possibly to 1.525v then 1.550v.

 

The DFI boards undervolt anyway so it should be ok. i run mine everyday at 2.7ghz with 1.52v according to smart guardian and cpu-z.

 

im Happy. :D

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i'm at 280x10 22+hrs dual prime stable on 1.38 in mbm. set to 1.4v in bios. this with a big typoon and 1500rpm tt 120mm fan. dual folding temp sits at 40c.

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well my opty seems to be fine at 2.6Ghz and stock vcore tested prime small ffts for over 60 hours then i stopped it. and yea temps seem to be not good all round i am loading at 50 odd celcius cpu and thats with a good hs and powerful ( not quiet ) 125cfm fan on it. i guess these dual cores have issues..

i cant even clock it higher cos the temps and only at stock vcore

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Thanks for the reply guys. After 10 hrs of x2 prime95 running @ 2.6 / Vcore 1.31, I can finally say that it is pretty solid. I will try 2.8 once I get better cooling for my NF4 chipset and better memory. For now 2.6 will do for my daily OC. I will post some benchmarks once I get some picture hosting.

 

Want to thank you DFI- Street for it's wonderful articles and of course the enthusiast.

CHEEERS...

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ur load temps should be better with water cooling?.. what watercooling setup u have?..

 

actually it might be because of the IHS problems people have been having, i guess thats why my temp so high with mine.. need to take it off but problems fitting the heatsink then

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