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Overclocking Sandbox: Tbred B DLT3C 1700+ and Beyond

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hitechjb1

Senior Member
Joined
Feb 2, 2003
Old name: Tbred B 1700+ DLT3C 2.5+ GHz air results

Overclocking a mobile Barton 2400+ to 2.6/2.7+ GHz on air (page 18)


Highest boot into XP is 2610 MHz at 1.98 V (including PCMark 2002)
1700+ DLT3C at 2.61 GHz (page 5)

Highest Sandra CPU: 9758 MIPS/3921 FLOPS, model rating 3306, PR rating 3785. :)
The CPU integer computing power is equivalent to P4 running at 3.34 GHz.

Highest Prime95/3DMark stable: :) 1700+ DLT3C 2.60 GHz (page 4)
2584/2595 MHz at 1.95-1.975 V, SLK-800U + Vantec Tornado @5700 rpm
Die temp: 38/27 C (die/system) loaded, 32/26 (die/system) idle

2539/2555 MHz at 1.94 V, SK7 + Vantec Tornado @5700 rpm 1700+ DLT3C 2.56 GHz (page 2)
Die temp: 40/27 C (die/system) loaded, 36/26 C (die/system) idle
Sandra CPU: 9556 MIPS/3837 FLOPS, model rating 3200+, PR rating 3700+. :)

Current operating point:
CPU clock: 2.54 GHz (203 x 12.5)
Vcore = 1.92 V +- 30 mV
Die temp: 48/28 C (die/system) Prime95, 40/26 C (die/system) idle, SLK-800U, TT SFII fan @4000 rpm

Other 24/7 operating points:
DLT3C 1700+ JIUHB 0310 XPMW
- 2.21 GHz stable 1.5V (default Vcore), 34/21 C (die/system) loaded, SK7 + TT SFII 3000 rpm fan
- 2.4 GHz stable 1.65V, 38/24 C (die/system) loaded, SK7 + TT SFII 3000 rpm fan
- 2.52 GHz stable (210x12), 1.875V, 48/28 C Prime95, 40/26 C idle, SK-7 + TT SFII 4700 rpm 1700+ DLT3C at 2.52 GHz (page 1)

DLT3C 1700+ JIUHB 0310 MPMW
- 2.50 GHz (227x11), 1.92V 42.5/20 C, NF7-S rev 2.0, SLK-847U TT SFII
- Prime95 24hr+ screen shot (few posts down)

DLT3C 1800+ JIXIB 0322 MPMW
- 2.55 GHz (221x11.5), 1.90V 47.5/23 C, NF7-S rev 2.0, SLK-847U TT SFII
- Prime95 24hr+ screen shot (few posts down)


Setup

With A7N8X-DLX motherboard (page 1)

Stepping XPMW 0310 (retail box, paid $64)
HSF: SK-7 + TT SF II --> SLK-800U + TT SF II / Vantec Tornado
PSU: Antec TP 430
MB: A7N8X-DLX rev 1.04
Bios: 1002A1 Uber
Memory: non-brand name 512MBx1 3500C2 5-3-2-2 @ 2.6V
Video card: Radeon 8500 128 MB
Vagp = 1.5 V
Vdd Chipset = (stock Vdd) 1.53 V (measured)

Vcore mod for higher Vcore (using fix resistor) (page 2)

9500np to 9700 Softmod and 3D Mark w/ Tbred B 1700+ DLT3C (page 7)

NF7-S rev 2.0 FSB_Sense 166 and 200 mod (from 133) test results (page 12)
NF7-S rev 2.0 FSB_Sense 166 and 200 mod (from 133) test results (part 2) (page 12)

Summary on overclocking the NF7-S rev 2.0 (with Tbred B 1700+ DLT3C and ...) (page 15)


Links to some posts

Basics

Relationship of clock, die temperature and voltage (update)
- What is the active power of a CPU at frequency f and voltage V
- How to estimate CPU static and active power
- Effect of die temperature on CPU clock frequency at a given Vcore
(page 13)

Relationship of clock, die temperature and Vcore
What is the active power of a CPU at frequency f and voltage V
How to estimate CPU static and active power
(page 2)

Effect of overclocking on CPU active power and current

What is the active power of a CPU at frequency f and voltage V

How many transistors, wires and capactors are there inside a CPU (page 13)

What are the value of C and R of a CPU for power estimation (page 14)

Effect of high Vcore and electromigration on CPU failure time (page 15)

What is channel length of a MOS transistor (page 16)
What is gate break-down voltage (page 16)

Why frequency and voltage are important for overclocking performance (page 19)

How does leakage current slow down future generations of chips (page 19)

Silicon on insulator (SOI), with introduction to bulk CMOS

Strained Silicon article from IBM
Strained Silicon article from Intel
Nice pictures and videos about Strained Silicon on SOI.
http://domino.research.ibm.com/comm/bios.nsf/pages/cmos-perf.html

Electromigration: Physics, effect of current density and temperature, testing, ...
http://www.eas.asu.edu/~schroder/Electromigration.pdf
http://www.cadence.com/whitepapers/electromigration.html
http://www.intel.com/technology/itj/q31998/articles/art_2.htm


General techniques

Summary for overclocking CPU and FSB (page 3)

How to interpret Sandra CPU benchmark, IPC and comparing with P4 (page 2)

Eliminating uncertainties for better overclocking (page 7)

Some numbers to determine max CPU overclocking frequency - Vcore vs temperature,
When do the CPU's slow down?
(page 13)
Explanation (page 13)

Overclocking limit and cooling cost for different types of overclocking (page 13)

Overclocking frequency-Vcore break-even point for Tbred B/Barton (page 15)

Effect of high Vcore and electromigration on expected failure time for Tbred B/Barto (page 15)

General rules on voltage and temperature for CPU overclocking (page 16)

How to determine "highest" voltage and temperature for CPU overclocking (page 16)

Question: How much power is increased ...

how many watts does your cpu take up?

What is the probability of achieving certain level of overclocking (page 16)

Vcore vs processor frequency and cycle time (page 19)

What is CPU stability (page 19)

What is IPC and how to compare cycle or Hz for different CPU architectures (page 19)

Analogy for comparing CPU cycles (page 19)

How to read CPU temperature (page 19)

Cache and CPU performance (page 19)

CPU voltage: from stock to max absolute, from efficient overclocking to diminishing return (page 19)

On CPU life expectancy and tradeoff (page 19)

What is an ideal and safe temperature for overclocking (page 19)

Why high voltage is needed to run higher CPU frequency (and maybe higher FSB) (page 20)

Relationship between CPU frequency and temperature (page 20)

Voltage, temperature and frequency: the basic variables of overclocking (page 20)


A64, A64-FX, 754, 939 platform related

Remarks on A64 and various platforms (page 19)

Estimation and importance of 939 platform memory bandwidth (page 19)

Differences between the XP FSB and the A64 buses (separate memory bus and HyperTransport bus) (page 19)

Some remarks on cache latency, cache size, memory latecny and memory bandwidth (for A64's) (page 19)

A64 CPUs, chipsets, motherboards


Tbred B 1700+ DLT3C, Barton related

What are the differences between Palomino, Tbred A and Tbred B/Barton? (page 1)

Why the 1700+ can run so fast at low Vcore? (page 2)

Lower voltage, shorter transistor channel length, lower transistor threshold voltage and Tbred B 1700+/1800+DLT3C (page 15)

Power of Tbred B 1700+ DLT3C at 2.5GHz 1.9V (page 3)

Comparing power of Barton w/ 1700+ DLT3C (page 3)

Comparing Tbred B 1700+/1800+ DLT3C and Barton 2500+ overclocking performance, power and temperature (page 14)

What happens to programs running in CPU with smaller and bigger L2 cache (page 17)

FSB_Sense mod to set Tbred B default FSB from 133 to 166 (page 12)
FSB_Sense mod to set Tbred B default FSB from 133 to 200 (page 12)

Tbred B and Barton rated voltage, frequency, power, current, and capacitance, resistance model (page 14)

Comparing power, current, temperature of various Tbred B and Barton overclocked to 2.5 GHz (page 14)

Overclocking characteristic (voltage, frequency, power, current, temperature) of a Tbred B 1700+ DLT3C (page 14)

Overclocking characteristic (voltage, frequency, power, current, temperature) of Tred B 1700+ DLT3C and a Barton 2500+ (page 14)

Overclocking characteristic (voltage, frequency, power, current, temperature) of a Tbred B 1700+ DLT3C for faster, slower chips (page 14)

Overclocking characteristic (voltage, frequency, power, current, temperature) of a Tbred B 1700+ DLT3C with different coolings (C/W) (page 14)

Impact of Tbred B 1700+/1800+ DLT3C or Barton 2500+ w/ locked multiplier on overclocking (page 18)

How to estimate max stable frequency at full load (for mobile Barton)(page 19)

Is it safe to run 2.1+ V on mobile Barton? (page 19)


Memory

Links to various posts on memory, FSB and CPU overclocking

RAS, CAS Timing and BIOS Memory Setting

Single Channel vs Dual Channel DDR Memory

Overclocking memory module(s) vs dual channel

256MB vs 512 MB vs 1GB, 1 module vs 2 modules

Dual Channel Memory (1 vs 2 sticks, sync vs async)

Dual Channel, Nforce2, P4 and AMD FSB

Some Benchmarks of CAS Latency on Overall Performance

Different RAS/CAS timing on memory latency (estimate)

What is cycle time and frequency

Frequency, clock, period of synchronous operations, latency

Latency

Analogy on Bus Speed, Bandwidth and Latency

Analogy for FSB, CAS2, CAS3 latency and bandwidth for DRAM memory

Memory bandwidth efficiency


Vcore

Max Vcore for Tbred B and Barton (page 5)

How much voltage can be applied to a CPU (page 5)

Effect of high Vcore and electromigration on CPU failure time (page 15)

Effect of high Vcore and electromigration on expected failure time for Tbred B/Barton (page 15)

What could damage a chip/CPU permanently? (page 15)


Air Cooling

Air cooling setup (page 2)

Temperature measurement and importance of HSF (page 5)

Impact of higher ambient temperature on CPU clock frequency (page 6)

Comparing some HSF's on CPU overclock frequency on air (page 6)

Comparing different HSF's and impact of ambient temperature on max CPU frequency (HSF 0.3 C/W) (page 6)

Comparing different HSF's and impact of ambient temperature on max CPU frequency (HSF 0.36 C/W) (page 7)

Ambient temperature from air cooling to water cooling (page 7)

Effect of lowering ambient air temperature on CPU overclocking (page 7)

PSU intake fan location & AMD Athlon System Cooling Guidelines (page 7)

SK7 or SK800?

Testing 4 fans w/ a SLK-947U on a Tbred B 1700+ DLT3C (page 16)

Comparing Tornado 80mm, Tornado 92mm and TT SFII (second test data) (page 17)

Recent high-end heat sink for socket A(page 19)
Fans(page 19)

Some remarks on case fans and cooling(page 19)


Power and current estimate, PSU requirements

What size PSU do I need? (page 6)

Some thoughts on choosing PSU for overclocking recent motherboard, CPU, GPU, ... (page 8)

Some test results on PSU with different ratings for overclocking (page 8)

Are the 9700 and 9800 using 5V for GPU Vcore? (page 14)

Which PSU line does AMD CPU run on (page 14)

On PSU and Fortron 530W testing (page 5)

Does this sound like a PSU problem?


Some useful links for AMD and Intel CPU's:

AMD Athlon? XP Processor Tech Docs

Data sheet for AMD Model 10 with 256 KB L2 Cache

Data sheet for AMD Model 10 (Barton)

Data sheet for AMD Model 8 (Tbred)

Intel® Pentium® 4 Processor

Data sheet for Intel P4 (1.4 - 2 GHz, 400 MHz system bus)

Data sheet for Intel P4 (2 - 3.2 GHz, HT, 533/800 MHz system bus)
 
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Overall system

dlt3c_1700_0304_TbredOC_124_system_c.JPG


CPU, chipset cooling

dlt3c_1700_2518_0304_TbredOC_099_cooling_c.JPG


CPU die and package

dlt3c_1700_2518_0304_TbredOC_168_cpu_c.JPG
 
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WCPUID

dlt3c_1700_2518_wcpuid_c.jpg


Sandra 2003 CPU arithmetic benchmark

dlt3c_1700_2518_sandracpu_c.JPG


Sandra 2003 memory bandwidth benchmark

dlt3c_1700_sandra_memorybw_fsb210_c.JPG


PC Mark 2002 benchmark

dlt3c_1700_2518_pcmark02_c.JPG
 
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Asus probe on voltages and temperature (Prime95 loaded)

dlt3c_1700_2518_probe_load2_c.JPG


Asus probe on voltages and temperature (idle)

dlt3c_1700_2518_probe_idle_c.JPG
 
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Prime95 and screen shot

2.54 GHz (221x11.5), 1.90V, 47.5/23 C, DLT3C 1800+ JIXIB 0322 MPMW, NF7-S rev 2.0, SLK-847U TT SFII

dlt3c_1800_jixib_0322_mpmw_p95_2545_TTSFII_c.JPG


2.50 GHz (227x11), 1.92V, 42.5/20 C, DLT3C 1700+ JIUHB 0310 MPMW, NF7-S rev 2.0, SLK-847U TT SFII

dlt3c_1700_jiuhb_0310_wpmw_p95_2502_TTSFII_c.JPG


2.52 GHz (210x12), DLT3C 1700+ JIUHB 0310 XPMW, A7N8X-DLX rev 1.0 SK7 TT SFII

dlt3c_1700_2518_0304_TbredOC_202_Prime95_c.JPG
 
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Just for completeness, this is the 3D Mark result using my only Radeon 8500 128 MB, for the time being. I must say it is nothing compared to 9700 pro and 9800 pro. Pls don't laugh at the numbers.



3DMark 2001 w/ Radeon 8500 128MB benchmark

dlt3c_1700_3dmark01_c.JPG


3DMark 2003 w/ Radeon 8500 128MB benchmark

dlt3c_1700_3dmark03_c.JPG
 
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hitechjb1 said:
The pics are in geocities. I can see it if put the pic link to the web browser address. Anyone knows what's wrong and can help. Does it take time to get through? Or due to cookies?

Those aren't links but just underlined text like this is.

This is a link.

Click on the quote link at the bottom of my post and look at the text box to see how they're differant.
 
Don't think that Geocities like referrals and therefore don't send the pics to a third-party page... If you try to copy and paste as someone said, it works...

/Norrko
 
I have XP 1700+WPMW 0310 batch 670 :( @2.3Ghz on 1.65V and for AC Dr.Thermal V77 is no problem... I unlocked multipiller with burned bridges on 15x (2400+ 15x133mhz) but i can't go under 15x :(. My PSU (waiting for FSP Fotrtron 350W) giving 4.6V on 2.35Ghz but i think this ferequency its stable :D. I waiting for my new water block an I'll overclock this cpu with watercooler. Stay tuned :D sorry for english
 
Jelen said:
I have XP 1700+WPMW 0310 batch 670 :( @2.3Ghz on 1.65V and for AC Dr.Thermal V77 is no problem... I unlocked multipiller with burned bridges on 15x (2400+ 15x133mhz) but i can't go under 15x :(. My PSU (waiting for FSP Fotrtron 350W) giving 4.6V on 2.35Ghz but i think this ferequency its stable :D. I waiting for my new water block an I'll overclock this cpu with watercooler. Stay tuned :D sorry for english

Is the Vcore getting from the 5V line. 4.6V is low, also depends on how much it drops between the CPU is idle and under heavy load.

When I used a non-brand name PSU that comes w/ the case, ... For this 1.5V low Vcore rated 1700+, at the last 100 MHz, when it was getting hot 50C, I saw the 5V and 12V line became not stable (esp the 12V line). Also the line voltages went UP instead of down during Prime95, 150 mV for the 5V and 300-400mV for the 12V. The 12V went up to 13.2V (!!!!) while the Vcore fluctuated about 30 mV p-p The mb Vcore regulator is doing the job. Does this indicate something.

Since the Vcore most likely is derived from the 12V (it is a nforce2 mb), some all other Vagp, Vdimm, Vdd should not be a problem since they are from the 3.3V (30A max), 5V (28 A max) lines.

I used a dual PSU setup to test this, by moving the HD, DVD, all fans, floppy, ... to another PSU. It worked a bit better with no vertical line video corruption that I mentioned previously, but it did not solve the PSU line instability at the top end of 1.8V Vcore.

So I thought my chip on air might be maxed out at around 2400-2500 MHz around 40-50 C die temperature, unless I go to liquid cooling to keep the die temperature and leakage current low.

Then anyway, I got a TP430 PSU, immediately I saw the 5V and 12V are much much more stable (within ~ 100mV, the spec is +-3% for 5V and 12V for the TP430) than the old PSU when cranking Prime95 and I was able to get the 1700 DLT3C running stable above 2.5 GHz.

For getting a new PSU for the last 100 MHz may not make sense for price performance, but it just shows the important of current for these high current high power chips running at 2.5+ GHz. Same will hold true for any CPU running above 2.5-3 GHz.

A CPU running at 1.9V at 2.5GHz takes about 40% more active current and about 56% more active power than a CPU running at 1.7V at 2GHz.

I = C V f
P = C V^2 f

I_1.9V_2.5GHz/I_1.7V_2GHz = 1.9 x 2.5 / (1.7 x 2) = 1.40
P_1.9V_2.5GHz/P_1.7V_2GHz = 1.9 x 1.9 x 2.5 / (1.7 x 1.7 x 2) = 1.56


Links for power and current estimate, PSU requiremetns and discussions:

Question: How much power is increased ...

how many watts does your cpu take up?
 
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OK, finally, I think the pic links are fixed and working now.

Sorry about the delay, if any problem, pls let me know.
 
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