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Core 2 Duo E4500 2.2Ghz Overclock

post #1 of 9
Thread Starter 
Hello all!

I recently built myself a new PC with up to date hardware and my old one is just collecting dust now. So I thought I'd try to get some overclocking done on it.

So far I've only overclocked graphics cards, the only Cpu I have overclocked was an old Pentium 2 xD and that was ages ago. I consider myself a beginner to that biggrin.gif.

The E4500 is quite old now and I guess it has been overclocked to death now. I was wondering is there a profile so to speak with all the voltages and multipliers to get a stable overclock.

So here are the system specs:
- Asus P5N-E SLI
- GTX 260 OC(non 216 core) 896mb(the cpu was a huge bottleneck for this gpu :S)
- E4500 2,2Ghz 2mb L2 cache
- Silent & Cool Blue storm 2 500W
DC output: +3.3V +5V, +12V1, +12V2, -12V, +5Vsb
Max. load: 30A 30A 18A 18A 0.8A 2.5A
+3.3V and +5V max output is 152W
Max peak: 530W

- Memory: 2x A-data 800 2gb DDR2

The cooling on the CPU was quite cheap, but the difference is nice. 37-42C idle on a 18C summer day on stock. The new cooler is giving me 29-34C(hits 34 when I view youtube for example).

I'm not even sure you can get any significant changes with this setup. I've read the basic introduction to overclocking and I'm aware what the terms mean.

So what kind of increase in power can I get with this setup? Is the increase even noticable? I got crysis and BFBC2 on the computer as well. BFBC runs quite rubbish with everything maxed, I wonder if it's possible to get it to run ideally biggrin.gif.

Anyway express your ideas please!
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Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
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Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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post #2 of 9
What resolution are you playing at? At lower resolutions, your CPU is limiting your video card. It also depends on the games you play and I'm pretty sure that BFBC really utilizes quad cores. I have the same processor as you (273x11) at 3.0Ghz, with a 19inch widescreen.
    
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post #3 of 9
Welcome to Overclock.net.. Go here - http://www.overclock.net/specs.php?do=addsystem and fill in your system spec so they show in your sig. It helps us help you..

BFBC actually was not a PC game as far as I remember, we got skipped for that one..

BC2 is tho and is never going to be maxed out on your hardware listed above..

However a nice bump to the E4500 should help. If you can keep it cool and your board can handle it. The 650i was a pretty good clocking board for the older 65nm C2D's. I remember seeing 500 FSB's on them...


You should be able to pull off a 3.0 - 3.2 OC with that setup so long as the cooler can handle it..

You will need to give some information on what settings you see in bios tho.

Here is a useful post for you Asus p5n-e SLI full tips tweaks and overclock guide

wink.gif google is amazing
Edited by 10acjed - 5/26/11 at 11:20am
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by 10acjed;13645147 
Welcome to Overclock.net.. Go here - http://www.overclock.net/specs.php?do=addsystem and fill in your system spec so they show in your sig. It helps us help you..

BFBC actually was not a PC game as far as I remember, we got skipped for that one..

BC2 is tho and is never going to be maxed out on your hardware listed above..

However a nice bump to the E4500 should help. If you can keep it cool and your board can handle it. The 650i was a pretty good clocking board for the older 65nm C2D's. I remember seeing 500 FSB's on them...


You should be able to pull off a 3.0 - 3.2 OC with that setup so long as the cooler can handle it..

You will need to give some information on what settings you see in bios tho.

Here is a useful post for you Asus p5n-e SLI full tips tweaks and overclock guide

wink.gif google is amazing

Thanks for the reply!

I pretty much went blind in and started fiddling around with things as im no beginner when it comes to BIOS biggrin.gif. So I tweaked around with timings and stuff, my first attempt was a 2.93Ghz stable oc(at this point temps didn't change noticably at all), tested with prime95 for 1 hour and afterwards some gaming. BFBC2(maxed out) ran like a breeze tbh, playing online was a joy xD. It wasn't constant 60fps, but 37-45fps was quite enjoyable compared to stock 21-30fps.

I wasn't satisfied with 2.9Ghz tho. I turned the rated fsb up to 1172, which gave me 3,2Ghz, but it froze or bsoded on the boot up screen. I started dialing it down from there on and landed on 1120, which gave me an error in prime95 after 5 mins and few seconds later a bsod. I thought maybe it needs higher VCore, I started experimenting with that from 1,337 - 1,4, wasn't gonna go above that cause Vcore makes things hot biggrin.gif.
I ended up with this:
http://imageshack.us/photo/my-images/594/cpuzmonit.png/
I didn't touch the memory I think, but anyway here are the clocks:
http://imageshack.us/photo/my-images/811/cpuzmemo.png/

Have been testing it for the whole day now, stable, no crashes or anything odd. Prime95 didn't error either for about an hour.

I'm wondering how can I get it up to 3.2Ghz the temps are very cool with 3025Mhz. When gaming the cores are around 47-51C max, I haven't seen it go beyond 51C, usually fluctuates around 45-48C. Mobo temps and northbridge don't go alarmingly high either 50-51C. I even touched the mobo and the sink, they're warm, but not something I couldn't hold on for long.

You asked about what I can see in my bios:
http://www.erodov.com/forums/guide-overclocking-e4300-asus-p5n-e-sli/733-page3.html

The link above has snaps of what I see when I'm in bios, the cpu they clock is just different.
Edited by onseth - 5/26/11 at 12:44pm
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Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
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Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by intelfan;13644646 
What resolution are you playing at? At lower resolutions, your CPU is limiting your video card. It also depends on the games you play and I'm pretty sure that BFBC really utilizes quad cores. I have the same processor as you (273x11) at 3.0Ghz, with a 19inch widescreen.

I have a 20inch wide screen monitor so 1680x1050 what I usually play on. Yes BFBC2 works best on Quad cores, I got it to run around 47Fps with 275x11 clock biggrin.gif.
My System
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CPUMotherboardGraphicsRAM
Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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Sagitta Raidmax 
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My System
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CPUMotherboardGraphicsRAM
Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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post #6 of 9
Just keep upping the cpu til unstable..

Keep temps below 70c full load and keep cpu voltage below 1.50v and your safe..

With the E4500 you should be able to pull off 3.2 - 3.4 but its going to get warm

I have an E4300 running at 3.0 - 1.43v and has been like that for a few years. It will do 3.2 @ 1.47v but temps are a bit hot and the added 200MHz doesn help the Mrs with her web browsing and shopping wink.gif she does that just fine at 3.0
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post #7 of 9
Thread Starter 
Core speed 3225 Mhz
Multip. x11
Bus speed 297Mhz
Rated FSB 1180 MHZ
VCore: 1,47V
Earlier today I got this cpu to that speed, Prime95 ran for a good hour + without problems.
Before that I ran ~3,1Ghz with a much much lower VCore and the temps were very low as well, but damn, going 100Mhz higher it requires a lot of VCore and with that very high temperatures(74 max).

Currently I'm running 3201.2Mhz with BUS 291Mhz and FSB 1164Mhz, VCore 1,43V I think. Prime has been testing for about 40 minutes.

I read a lot of material since early morning and I found a lot of people getting 3,2Ghz with much much lower VCore, 1,36 etc. with 1,4 being the highest I saw. How? O_o
I had to turn up the Vcore all the way from 1,35 to 1,43 to get 3,2Ghz stable as in, it didn't BSOD 5 minutes into Prime.

Are there other ways to achieve stability with this cpu series besides turning up the vcore?

I also lowered my DRAM freq. from 400(800Mhz mem fsb in bios)which is the max on this ram down to 291Mhz which gave me the 1:1 ratio, I'm not sure if I downclocked my ram here or something XD. Before that it was 3:4 (Fsb:Dram) from that I understand that the cpu was slagging behind the ram?
Did I make this system slower or actually faster? I don't really know, I couldn't find the answer in any guide either.
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Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
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Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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My System
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CPUMotherboardGraphicsRAM
Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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post #8 of 9
A 1:1 ratio would give you a memory speed of 594MHz. Its your Bus speed x 2.

Unfortunately there are not alot of options when it comes to ram overclocking with locked memory dividers. See what other options are there. If there is a 2.66 strap it would put your ram at 790.. Not sure the exact divider as its been a while since doing the calculations.. they are like 5:6 - 7:10 or something.. But there are general straps for 2.00 - 2.66 - 3.33, the 1:1 ratio is the 2.00 (bus speed x 2) the next may be the 2.66 (bus speed x 2.66) so 297 x 2.66 = 790
But 200MHz of cpu speed is much more effective than 200MHz of ram speed...

As far as stability is concerned I always recommend at least 10 hours of Prime95. I have had errors in Prime95 at 6 - 7 hours and needed just a small bump in voltage to stabilize it.
Max temps of 74c full load in Prime95 are ok, you wont see them that high in any other real world apps.


And really the whole process is as simple as higher cpu freq = more voltage needed. Most chips will have a hump to get over or a wall.. You may be able to run 3.0 at 1.35v but need 1.45v for 3.2. Intel max safe vcore is 1.50v so either way its fine. Just going to be a little warmer with the added voltage..
Edited by 10acjed - 5/27/11 at 6:33am
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post #9 of 9
Thread Starter 
So prime95 has been running the majority of the day now, no errors found.
CPU: 3200mhz
Rated FSB: 1164Mhz
Bus speed: 291Mhz
VCore: 1.45V (that was the sweetspot, temps are very acceptable and it's stable)

Pretty stable, gonna let prime run overnight. I ran Crysis 2 on this CPU, it was jaggy and didn't want to load. I reset my DDR fsb up to 800Mhz in bios, giving me 388Mhz actual DRAM Freq. in CPU-Z, that fixed the jaggyness and overall, the system is so much more responsive. Crysis 2 runs smooth, it's very playable(35-52 fps, 52 when you look up at the sky xD). At very intense moments the cpu still doesn't reach the potential of the GPU, but at least the freezing and jaggyness is gone in games biggrin.gif, as usual with severe bottlenecks.

I guess I can go even higher cause the highest temps i've gotten under 100% load was 68C, 3.3Ghz possibly, anything over that and I need some better cooling.

I guess I can consider it stable at this point. Thanks everyone who replied and especially thanks to 10acjed for all the advice and helpful reading material biggrin.gif!
My System
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CPUMotherboardGraphicsRAM
Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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Sagitta Raidmax 
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My System
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CPUMotherboardGraphicsRAM
Core 2 Duo E4500 2.2Ghz, 2mb L2 cache Asus P5NE-Sli BFG GTX 260 OC A-Data 2x2Gb, DRAM Freq: 400Mhz 
Hard DriveOSMonitorPower
Samsung Spinpoint 250Gb 7200rpm Windows 7 Enterprise 20" Syncmaster 206BW Silent & Cool Blue storm 2 500W 
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Sagitta Raidmax 
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