2.4C in a 850 MOBO

J

Jinx Twitchyboo

n00b
Joined
Feb 5, 2004
Messages
41
I know there have probably been questions about this recently, but with other motherboards. Because, you see... The TH7II that I currently have supports locking the pci bus at 33MHz and there is no limit to the FSB clock, is it presumptuous to think that I can put the 2.4c in my MOBO and clock the FSB 200 with no problems? I only ask because the TH7II uses the i850 chipset and the cost of buying a new 875 plus 1gig of DDR wouldn't be justified seeing as how if this would work, NewEgg is selling the 2.4c for $165. I'm almost positive that locking the pci bus, setting the Rambus timing manually and cranking the FSB will work. Any ideas as to why this wouldn't? I'm currently running a 1.6A @ 2.4 and I'm sure I could run a FSB to upwards of 230-250 no problem with everything else locked down.
 
not sure about the limitations of the 850 but you could give it a shot... even if it didnt work, youd still have in the high 170's in terms of fsb. even if you can lock the pci, i wonder about the dividors for the ram...

i recall reading about your motherbaord and having to voltmod to even get above 170 most of the time. from a guess id say it probably isnt happening

if you wanted to get a 2.4c, you would take advantage of the hytperthreading (its 850e right?) but lose a bit of megahertz even compared to your current o/ced settings
 
Yeah it probibly wont work even if you have all the locks, the chipset probibly wont hit 200 at all.

845 boards have a hard time hitting 200 FSB although some makes can.
 
Originally posted by chrisf6969
NO WAY its hitting 200FSB, buy a 3.06 (533)... they're $230 and you get HT
Click to expand...

I used to get 195fsb on my TH7II with a 226 watt tec on a 1.6a, But the chip was running out of steam. Jcviggen has hit 200fsb on a 1.6a on a rdram board if i remember.

I've got a TH7II running in the basement watercooled now with a 1.6a 182fsb.

Been to lazy to try a C chip in it, But i've wanted to. maybe RDRAM will rules again.. Just kidding.

But it did used to!!!!
 
Originally posted by Tedinde
I used to get 195fsb on my TH7II with a 226 watt tec on a 1.6a, But the chip was running out of steam. Jcviggen has hit 200fsb on a 1.6a on a rdram board if i remember.

I've got a TH7II running in the basement watercooled now with a 1.6a 182fsb.

Been to lazy to try a C chip in it, But i've wanted to. maybe RDRAM will rules again.. Just kidding.

But it did used to!!!!
Click to expand...

Yeah but those were extreme cases, this guy just wants to run a 2.4c @ stock, way more then likely not gonna happen, Definatly not stable.
 
Yeah my board was modded pretty good. for some extra Rdram voltage. I might Just for fun this weekend try a 2.4c in it.
 
The reason those chips weren't hitting 200 FSB on the 845 is that they were either using 400 or 533 P4s. You should only have to up the voltage if you're running the chip way past its normal FSB, so I feel pretty confident that 200fsb isn't out of the question on my board (although maybe I should think about the 3.0c just in case so I don't hafta eat as much MHz if it'll only go to 170). By the way, the TH7II is non-HT, although I don't see that as a big issue seeing as how it doesn't affect framerates in games very much. The multiplier on the ram should be no problem, I can lock that down too. You've got to remember that most of the hurdles you hafta jump over to get a good OC on most MOBOs is taken care of by the TH7II and a modded bios. Ram frequency can be locked, pci bus can be locked, no limit on FSB speeds, voltage goes to 2.0. Only drawback is that it's AGP4x and no HT support. I think I can get over that though seeing as how my 1.6A@2.4 system runs just slightly slower (around 7-12% slower) than a friend's running a 2.6C@3.2 with the 875 chipset. If all else fails, it's tax return time and I can just eventually get a 875.
 
Originally posted by Jinx Twitchyboo
The reason those chips weren't hitting 200 FSB on the 845 is that they were either using 400 or 533 P4s. You should only have to up the voltage if you're running the chip way past its normal FSB, so I feel pretty confident that 200fsb isn't out of the question on my board (although maybe I should think about the 3.0c just in case so I don't hafta eat as much MHz if it'll only go to 170). By the way, the TH7II is non-HT, although I don't see that as a big issue seeing as how it doesn't affect framerates in games very much. The multiplier on the ram should be no problem, I can lock that down too. You've got to remember that most of the hurdles you hafta jump over to get a good OC on most MOBOs is taken care of by the TH7II and a modded bios. Ram frequency can be locked, pci bus can be locked, no limit on FSB speeds, voltage goes to 2.0. Only drawback is that it's AGP4x and no HT support. I think I can get over that though seeing as how my 1.6A@2.4 system runs just slightly slower (around 7-12% slower) than a friend's running a 2.6C@3.2 with the 875 chipset. If all else fails, it's tax return time and I can just eventually get a 875.
Click to expand...

I am not sure what your talking about, but I am talking about 800mhz FSB stock P4c chips not working in older motherboards. The reason why they generally dont work in 845 boards is because the chipset and motherboard just cant handle the high FSB. Has nothting to do with the CPU because the CPU is running at stock speeds. Now I have heard of P4C chips running in a select few brands of 845 boards, I had a 2.4c run in my old Albatron 845 board. I let it go, got an Albatron 865 board and a 2.6c because I couldnt stand running at stock speed as the 845 board wouldnt do much over 200FSB at all.

I doubt an 850 board will handle any more then an 845pe chipset from a pure overclocking board. Either way try it out and tell us how it goes, I would be amazed if you could get a 2.4c working stable on an old 850/rdram board. I bet that chipset would be just blazing hot like the 845pe was @200mhz:D
 
Exactly. FSB overclocking can be limited by the motherboard. I wouldn't count on the chipset being able to reach 200 FSB, and since 2.4Cs are such stellar overclockers, you'd be wasting its potential anyway since you'd never be able to hit ~250.
 
You said you might want to get a 3.0C or higher since you dont want to waste Mhz if you cant reach 800FSB.

with current setup you would be very lucky IF you can reach even the default speed

OPTION#1 (keep old mobo & ram)
3.0C = $230
- selling old CPU ?

OR

OPTION#2
2.4C === $161
Abit IS-7 = $97
2x256 ===$92 (Geil 2x256Mb PC3200 2-3-3-6)
total = $350
-selling your old CPU, mobo & ram together as a pretested OC'd set $120+ (more likely)
total $230

OPTION #1 you will probably be at 2.8Ghz @ 748FSB(187)

OPTION # 2 will reach MINIMUM 3Ghz @ 1000FSB(250)... and maybe even 3.6Ghz... (just like my set up) Plus add HT, SATA, much higher bandwidth (dual channel DDR), etc...
 
also, those peopel who hit >200 way back when were using mobile chips (12x multi)

those were the days...

but give it a shot someone. i wish i had an 850e sometimes :)
 
You must log in or register to reply here.
Back
Top