A study in c1 overclocking!!!

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Duvie

Elite Member
Feb 5, 2001
16,215
0
71
Please list in order and keep the words to a minimum....

List as shown in example....(ofcoure this is not a c1, but bare with me)

SL code:
Packing date:

1.6a@2.53ghz w/ 1.52v (max temp at default or closest you can get, mobo varying)
1.6a@2.74ghz w/ 1.71v (max oc and vcore)
4BDA (latest bios)
512mb corsair pc3000 @342mhz cas 2,2,2,6 2.6v 1:1 ratio
350 watt Antec
+12v = 11.74 idle 12.04 load
+5v = 4.92 idle 4.94 load
vcore = 1.71idle 1.66 load
cpu temp: 39c idle 50c load
system temp: 24c idle 27c load

prime95 tested: X
memtest86: X
3dmark2k1: X
Sandra (spit!!): X ( sucky tester, but some use it)
cpuburn: X


anything else I forgot??? Let me know....Lets make this as scientific as possible, and get good date we can analyze.

 
S

ScottyB

Diamond Member
Jan 28, 2002
6,677
1
0
I'll test my 2.4 b0 when I get it up, probably by monday, for comparison.

Edit: just got everything up, I tried it at 2880 (18 x 160) and it would pause on the Sandra 2002 burn in test, I dropped it down to 2754 (18 x 160) and boosted up my ram speed (its at 405 cas 2 (i believe)) and it seems to be working good so far. May have to drop it down though.



Update: I just bumped up the voltage to 1.65 in bios which is showing 1.63 in the bios monitor and 1.616v in CPU-z and I got the following overclock. I am going to try for 167 x 18 (3006) tommorrow.



SiSoftware Sandra

Computer System
Name : JET-BLACK
User Name : Scotty
Logon Domain : JET-BLACK

Processor(s)
Model : Intel(R) Pentium(R) 4 CPU 2.40GHz
Speed : 2.92GHz
Performance Rating : PR3209 (estimated)
L2 On-board Cache : 512kB ECC synchronous ATC

Mainboard and BIOS
Bus(es) : ISA AGP PCI IMB USB SMBus/i2c
MP Support : 1 CPU(s)
System BIOS : Phoenix Technologies, LTD 6.00 PG
Mainboard : i845GE/PE-W83627
System Chipset : Intel Corporation 82845G/GL System Controller & Host-Hub Interface Bridge
Front Side Bus Speed : 4x 162MHz (648MHz data rate)
Installed Memory : 512MB DDR-SDRAM

Operating System(s)
Windows System : Microsoft Windows XP Professional Ver 5.01.2600 Service Pack 1



Cpu-Z version 1.15

Number of CPUs 1

Cpu Name Intel Pentium 4 (Northwood)
Specification Intel(R) Pentium(R) 4 CPU 2.40GHz
Family / Model / Stepping F 2 4
Extended Family / Model 0 0
Brand ID 9
Package mPGA-478
Core Stepping B0
Technology 0.13µ
Supported Instructions Sets MMX, SSE, SSE2
Cpu Clock 2916.5 MHz
Clock multiplier x 18.0
Front Side Bus Frequency 162.0 MHz
Bus Speed 648.1 MHz
L1 Data Cache 8 Kbytes, 4-way set associative, 64 bytes line size
L1 Trace Cache 12 Kµops, 8-way set associative
L2 Cache 512 Kbytes, 8-way set associative, 64 bytes line size
L2 Speed 2916.5 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits

Motherboard manufacturer
Motherboard model i845GE/PE-W83627,
BIOS vendor Phoenix Technologies, LTD
BIOS revision 6.00 PG
BIOS release date 11/25/2002
Chipset Intel i845PE rev. B0
Southbridge Intel 82801DB (ICH4) rev. 2
Sensor chip Winbond W83627HF

RAM Type DDR-SDRAM
RAM Size 512 Mb
RAM Frequency 405.1 MHz
CAS# Latency 2.5 clocks
RAS# to CAS# 3 clocks
RAS# Precharge 3 clocks
Cycle Time (TRAS) 7 clocks
DRAM Idle Timer 16 clocks
# of memory modules 1
Module 0 Corsair DDR-SDRAM PC3200 - 512 Mb

AGP Status enabled, rev. 2.0
AGP Data Transfert Rate 4x
AGP Side Band Addressing supported, enabled
AGP Aperture Size 256 Mb

Windows version Microsoft Windows XP Service Pack 1 (Build 2600)

WCPUID Version 3.1

Processor #1 : Intel Pentium 4 / F999E67C
Platform : Socket478 (mPGA478 Socket)
Vendor String : GenuineIntel
CPU Type : Original OEM Processor (0)
Family : 15 (0)
Model : 2 (0)
Stepping ID : 4 (-)
Brand : 9
APIC : 0
Name String : Intel(R) Pentium(R) 4 CPU 2.40GHz

Internal Clock : 2916.48 MHz
System Bus : 648.11 MHz QDR
System Clock : 162.03 MHz
Multiplier : 18.0

L1 I-Cache : ----
L1 D-Cache : 8K Byte
L1 T-Cache : 12K uOps
L1 Cache : ----
L2 Cache : 512K Byte
L2 Speed : 2916.48 MHz (Full)

MMX Unit : Supported
SSE Unit : Supported
SSE2 Unit : Supported
MMX2 Unit : Not Supported
3DNow! Unit : Not Supported
3DNow!+ Unit : Not Supported

Host Bridge : 8086:2560.02 [Intel 845G/845GL]
IDE Controller : 8086:24CB.02 [Intel 82801DB (ICH4)]
VGA Device : 10DE:0150.A3 [NVIDIA GeForce2 GTS/Pro]
Memory Size : 512M Byte
Memory Clock : 202.53 MHz
: C6,2,M:1C00,D:140C,R:1400
 
E

ErikaeanLogic

Platinum Member
Feb 14, 2000
2,469
0
76
Guess I'll kick it off;):

C1 stepping Pentium 4 1.8A
SL6LA
Packing date: ?

1.8A@2808MHz, 1.525Vcore (default)(Asus overvolts, 1.585Vcore idle:()
1.8A@????MHz (maximum)
Asus P4B-533E, bios v1008
2 x 512MB Corsair XMS3200C2:
@312DDR, 2-2-2-5, 2.6Vdimm, 1:1 ratio, 2334/2333 Sandra bw test
@416DDR, 2-3-2-7, 2.9Vdimm, 3:4 ratio, 3164/3161 Sandra bw test
Antec TruePower 550W (all voltages nearly dead on either idle or under load)
Radeon9700, 385/337 (core/mem)

System passed 12+ hours stability testing using both Prime95 and MemTest86.
Temp (system/idle/load), Celsius degrees: 29/29/33
custom H2O;)
3DMark2001SE, build 330: 15,473 w/DDR 312, 16,414 w/DDR416

Will post more data later. . .:)
 
C

caboob

Platinum Member
Mar 31, 2000
2,214
0
76
All the C1s I've played with so far:

P4 2.53 SL6DW
OEM CPU
purchased 11-20-02 from an ebay trader
2.53B@2.85w/1.52V (really 1.6 from my overvolting Asus P4PE)
2.53B@2.95GHz w/1.70V 3dmark/UTstable
Asus P4PE bios 1002 beta
512 Corsair PC3200 2-2-2-5 3:4 mem divider
POS 400W Raidmax
innovatek watercooled
+12V: 11.5V
+5: 4.79V
Vcore: can't tell
CPU temp: 35C idle, 40C load
system temp: 22C idle, 25C load
12hrs of 3dmark loops


SL6EF 2.4B
OEM CPU
traded from Lukfilm 12-03-02
2.4B@2.70GHz w/1.52V (really 1.6 from my overvolting Asus P4PE)
2.4B@3.01GHz w/1.70V 3dmark/UTstable
Asus P4PE bios 1002 beta
512MB Corsair PC3200 by 2-2-2-5 4:5 mem divider
550W Antec True
innovatek watercooled
+12V: 11.89V
+5: 5.15V
Vcore: can't tell
CPU temp: 33C idle, 40C load
system temp: 22C idle, 25C load
12hrs of 3dmark loops


SL6LA
OEM CPU
purchased 12-09-02 from PC Club, Lynnwood
1.8A@2.52GHz w/1.52V (really 1.6 from my overvolting Asus P4PE)
1.8A@2.88GHz w/1.70V 3dmark/UTstable
Asus P4PE bios 1002 beta
512 Corsair PC3200 by SPD 4:5 mem divider
550W Antec True
innovatek watercooled
+12V: 11.89V
+5: 5.15V
Vcore: can't tell
CPU temp: 35C idle, 40C load
system temp: 22C idle, 25C load
12hrs of 3dmark loops


OEM 2.66B SL6DX
purchased 12-15-02 from an ebay trader
2.66B@2.90 @1.55V (Asus overvolting)
2.66B@3.20 @1.75V (actual)
same equipment/settings as above
CPU temps: 38C idle, 45C load
system temp: 22C idle, 25C
12 hrs of 3dmark loops

same processor on a Gigabyte 8IEXP
2.66B@3.4Ghz @1.725V
Corsair PC3200 by SPD (no mem tweaking whatsover on this board)
Vantec Aerocooler HSF
350W Enermax Whisper (KICKS ASS)
CPU temps: 28C idle, 44C load
System temps: 22C idle, 27C load
+12V: 12.1 (readings from Easy-Tune OC utility)
+5V: 5.1
+3.3V: 3.29V
daily sessions of UT

2.66B #2
purchased 12-15-02 from ebay trader
2.66B@3.00 @1.55V (Asus overvolting)
2.66B@3.30 @1.75V (actual)
Asus P4PE bios 1003 beta
512 Corsair PC3200 by SPD 4:5 mem divider
550W Antec True
innovatek watercooled
+12V: 11.37V
+5: 5.15V
Vcore: can't tell
CPU temp: 35C idle, 40C load
system temp: 22C idle, 25C load
daily sessions of UT (upgraded to DX9/Cat3.0 drivers making 3dmark2001se unusable)

My quest for 3.0GHz is over and I am now waiting (like everybody else) for GB. I have observed better OCing on the older 845E board and i think its due to the voltage regulation. The Vcore voltage is steadier on the Giga board (with its 3-phase VR) than on the Asus board (with its 2-phase VR). I'll definitely be going Gigabyte for GB. As well, Easy Tune rocks. Lots of things can be tweaked from the Windows desktop and then can be saved. It's a great utility for me because i only run overclocked for gaming or benching anyways.

 
B

Blurry

Senior member
Mar 19, 2002
932
0
0
Those scores look awesome...still waiting for my 1.8A to come back from Intel. I hope it is a C1 Stepping.
 
J

Jgtdragon

Diamond Member
May 15, 2000
3,816
19
81
My C1 should be here by next week, but still have to wait for GB. :(


Oh yea guys, try to mention what cooling you are using. Like Intel stock hsf or water cooling.

Cheers.


Edit: 12/12/02
My CPU from Lukfilm came today.
(Dell pulled)
Marking on the chip
Pentium 4
1.8AGHZ/512/400/1.525v
SL6LA Costa Rica
3235A027-0592 (what week is this?)
 
D

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
TTT...keep it coming and please edit in your first thread to keep numbers down and stuff pretty well compressed during reading of the thread.
 
T

Toymaker

Member
Jul 9, 2002
192
0
0
SL6K6
09/26/02

2.80 Ghz @ 3.15 Ghz, 1.525 Vcore(stable)
Gigabyte GA-8IR533, F5 bios
1024 MB Corsair PC3500C2@ 300 Mhz DDR(1.5,5,2,2) 1:1
ATI Radeon 9700 Pro
550 W. Antec
Thermalright AX-478 w/80 mm Vantec Tornado
+12 =11.94 idle, 12.02 load
+5 = 4.97 idle, 5.05 load
CPU temp = 37c idle, 46c load

Prime 95 tested: 24 hrs +
3Dmark 2001 SE loop: 24 hours+(one run=16307 3D marks)
Sandra: 2256/2258
UT2003:Flyby=213.5, Bot=73.0 (stable)
I don't know if this P4 2.8 is typical because this motherboard doesn't have Vdimm adjustments. Just waitin' for my new GA-8INXP.
 
L

LiQiCE

Golden Member
Oct 9, 1999
1,911
0
0
Not a c1 overclock, but just for comparison purposes:

P4 2.4 Ghz, 533 FSB

SL code: SL6EU (b0 stepping)
Packing date: 11/01/2002

2.4B@2.80ghz w/ 1.55v (157 x 18.0) <-- 100% Stable
UPDATE: 2.4B@3.00ghz w/ 1.7v (actually runs around 1.68v) (167 x 18.0) <-- Not 100% stable, trying to get it stable at this speed
Epox 4PEA+ (Latest BIOS, C02)
Retail HS/F + stock thermal paste (Might run better with Artic Silver)
512MB Corsair XMS PC3500 @ 390Mhz CAS 2,2,2,5; 4:5 ratio, stock voltage
512MB Corsair XMS PC3500 @ 417Mhz CAS 2,3,3,7; 4:5 ratio, stock voltage
350 Watt Enermax PSU

+12v = ~11.98-12.02v
+5v = ~5.0-5.05v
Vcore = ~1.6v load ~1.68v idle @ 3Ghz
CPU Temp: 109F idle, 145F load <-- Is this dangerous???
System Temp: 85F idle, 113F load

Prime95 tested: X
Super Pi tested: X

I'm still burning in at 2.88Ghz right now, I'm not 100% sure of its stability at this speed, but I'm pretty sure I can get it to stabilize. I figure I'll get some more speed out of the processor as the thermal paste settles and the processor burns in. (Processor has only been running for 1 day so far).

Can anyone tell me if the temperature I've got the processor running at currently is dangerous? I've heard most people say that the big problem with the P4's is voltage and not temperature, so I figured as long as I stay under 1.7v I'll be OK?
---
UPDATE: Got this sucker to boot up at 3.0Ghz with 1.7v on the motherboard (EPOX undervolts, to this is actually around 1.66-1.68v idle) ... Not too shabby for a b0 stepping P4 eh? Gonna probably put on some Artic Silver 3 today and see if I can get the temps down a little lower.

UPDATE 2: Put on some Artic Silver 3 that I had lying around from my last overclocking attempt (Athlon XP 1900+ .. Didn't get it to go anywhere though so I left it at stock); My load temps at 2.85Ghz (18 x 157) are down from 145 to 127!!! The AS3 hasn't even had more than 30 mins to "bond" with the processor, so I'm hoping the temperature will drop a bit by the time I finish! 3Ghz here I come!! :)
 
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GenTarkin

Member
Aug 5, 2001
115
0
0
Yeah well....
I got the same 1.8a as you guys above me...I have a shitty one I guess
its the SL6LA stepping
stock voltage stable at 2.62ghz yeah and um 1.7v its only stable at 2.71ghz
Mobo, epox 4pea+
PSU ANTEC 350WATT blue lit one.
argh...thats it


gonna take it back tomorrow and get another C1 if they wil let me do exchange, they had 3 of them.
 
P

phamtastik

Senior member
Apr 24, 2000
711
0
0
How can I identify the stepping of my 1.8A ?
I'm too lazy to take it out of the vapochill.

Thanks
 
D

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
That i845pe seems to be a common point among a lot of the rather low c1 stepping chip overclocks...WE need to get someone to get a 1.8 C1 on a proven winner like a Epox 4G4A!!!;)
 
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GenTarkin

Member
Aug 5, 2001
115
0
0
well, Im gonna get an exchange on this chip, see if I can take it further....
cause I m ean my board only runnin at 150fsb the PE should be able to go to 165 or so....that I will be happy with.

=( me so sad...
 
M

mroleg

Senior member
Nov 8, 2002
803
0
0
p4 2.66 C1
SLCoDE: SL6EH
Pack Date: 09/12/2002
FPO/BATCH: L229A482
Asus P4PE
TT 450W PSU
2x512 Mb Corsair 2700 DDR XMS running at 2-2-3-6
ATI 9700 Pro
Name String : Intel(R) Pentium(R) 4 CPU 2.66GHz
Internal Clock : 3000.01 MHz
System Bus : 600.00 MHz QDR
System Clock : 150.00 MHz
Multiplier : 20.0
Memory Size : 1024M Byte
Memory Clock : 187.50 MHz

Temps are taken with vantec nexus panel with 3 temp probes:
cpu 28.5 C idle/38.5 loaded
ram is around 29C idle/34 loaded

Voltage is taken with asus probe (all voltage settings are set to auto in bios):
+12V at 12.16
+5V at 5.16
+3.3 at 3.424
Vcore at 1.525



Tests:
SiSoftware Sandra
Float iSSE2 Cache/Memory Results Breakdown
2kB Blocks : 32388MB/s
4kB Blocks : 32364MB/s
8kB Blocks : 26920MB/s
16kB Blocks : 23922MB/s
32kB Blocks : 24158MB/s
64kB Blocks : 24271MB/s
128kB Blocks : 24520MB/s
256kB Blocks : 22272MB/s
512kB Blocks : 17579MB/s
1MB Blocks : 1357MB/s
4MB Blocks : 1456MB/s
16MB Blocks : 1365MB/s
64MB Blocks : 1376MB/s
256MB Blocks : 1369MB/s
Data Item Size : 16-bytes
Buffering Used : No
Offset Displacement Used : Yes
System Chipset
Model : ASUSTeK Computer Inc 82845PE Brookdale Host-Hub Interface Bridge (B0-step)
Front Side Bus Speed : 4x 150MHz (600MHz data rate)
Max. Bus Bandwidth : 4800MB/s (estimated)
Memory Bus Speed : 2x 188MHz (376MHz data rate)
Max. Memory Bandwidth : 3008MB/s (estimated)

3dMark2001SE
16173@1024x768x32bit


Oleg
 
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GenTarkin

Member
Aug 5, 2001
115
0
0
so, is the 845G chipset a better overclocker then the 845PE or 845GE?
someone said to get the EPOX 4G4A+ instead of my current EPOX 4PEA+

is that true?
 
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