Just got mine a few days ago and I'm testing step by step, for the moment I tested lowest voltage at 1000Mhz (stock idle frequency) and went down to 0.850V, I think it won't go far beyond that but I'll try. I'll try to post other results when the tests are done
@ NOOB : I see your CPU-Z screenshot shows some overvolting compared to stock voltage (1.296 instead of 1.25), I have the exact same overvoltage shown in CPU-Z with my Gigabyte GA-MA78G-DSH3, do you have an idea where it would come from
I'm using a g1 brisbane @ 1ghz 0.80v for six months now...
I never tested the stability on any burn test, but it is 100% stable at Idle, and I even played "NFS porsche 2000" at this clock and voltage for hours, anyway, what would be the estimated TDP at such clocks/voltages!?
I don't know what would be the TDP at that speed and voltage, I'm monitoring only the total power consumption of the PC.
Seems I didn't get the best sample, I'm getting errors at 2875Mhz (12.5 x 230Mhz) at stock voltage, 2750Mhz went fine but not here. Have to do more checks but I already lowered the HT Link speed and still get the same errors, I'll try cooling actively the CPU, it might help a little bit.....
I don't know what would be the TDP at that speed and voltage, I'm monitoring only the total power consumption of the PC.
Seems I didn't get the best sample, I'm getting errors at 2875Mhz (12.5 x 230Mhz) at stock voltage, 2750Mhz went fine but not here. Have to do more checks but I already lowered the HT Link speed and still get the same errors, I'll try cooling actively the CPU, it might help a little bit.....
What is your cpu cooling and what is your board?
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Q9550 4ghz (475x8.5) 1.32v load (Megahalem Push/Pull)
Asus P5Q - Deluxe (m2102) 1.40v NB
4gb Crucial Ballistix Red (6-6-6-18 @ 1140mhz, 9.3gb/s read)
BFG GTX275 720/1475/1269 (1.18v, higher for benches.)
OCZ SXS 600w
Lian Li PC-7 (Small, Old 80mm version )
My board is a Gigabyte GA-MA78G-DSH3 and the CPU cooler is a Cooler Master Z600. I use it fanless (with no fan attached to it), however it benefits from the extraction fan of the PSU located just above.
This evening I added a little bit juice (1.275 in BIOS instead of 1.25V) and 2875Mhz went OK
Well I can go and start the "unofficial Athlon 4850e Underclocking thread"
Check out my low underclocks! Low and Low but higher multiplyer They both draw .80A Idle
Last edited by arthur92710; 06-19-2008 at 09:13 PM.
Well I can go and start the "unofficial Athlon 4850e Underclocking thread"
Check out my low underclocks! Low and Low but higher multiplyer They both draw .80A Idle
Impressive ref HT. Lowest I could reach was ~165MHz on the DFI790FX. What mobo are you using?
How low can you go with the cpu voltage? I'd expect 0.7-0.8V here.
Well I can go and start the "unofficial Athlon 4850e Underclocking thread"
Check out my low underclocks! Low and Low but higher multiplyer They both draw .80A Idle
Impressive ref HT. Lowest I could reach was ~165MHz on the DFI790FX. What mobo are you using?
How low can you go with the cpu voltage? I'd expect 0.7-0.8V here.
My mobo is the ASUS M3A
I set the FSB to 600 and multi to 5x voltage was auto.
Then in windows I used a64clk to test other multipliers. YES!! I win in something!
My mobo is the ASUS M3A
I set the FSB to 600 and multi to 5x voltage was auto.
Then in windows I used a64clk to test other multipliers. YES!! I win in something!
So it's actualy a bug in the bios allowing such an low ref HT?
Bios 600MHz -> System 90MHz?
what kind of temps are u guys getting. Im getting weird temps with my 4850e, I have it cooled with a ninja mini (as5). Thing is, its (core 1/2) idling at 15-20´C (at start, usually 20-25'C after its been on for a while), but when I put prime95 small ffts on it makes a huge jump to 50-55'C (core1/2). vcore is set at 1.15v in bios, stock speeds.
I mainly use everest ultimate for temp readings but I also have hwmonitor. Both give the same temp for the individual cores but HW states TMPIN0 as 70'C+ when having small ffts on, confusing.
I first had a gigabyte 780G matx board but after a bad @bios flash (kickin myself of using that) I got a 690G asus board as a temp. recplacement. I get the same temps with both of the boards.
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1. Q6600@ 3.4ghz (1.37v), Asus Formula Maximus, 2x2 OCZ Reaper pc6400 CL4, 150gb velo, HD4870x2, corsair 750w