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AMD Llano APU's! - Page 7

post #61 of 125
Quote:
Originally Posted by phatts420 View Post

i just built a nice budget build based on a Gigabyte A75/ A4-3400 setup....it seems the clock multiplier is UNLOCKED! FSB is @100mghz (manual) CLK Multiplier x30(manual (x27 norm.) memory OC 1600 (auto), voltage timings auto. i haven't pushed it beyond this to see how high it'll go but windows7 (64bit) reports it running at 3.0ghz, also EasyTune 6(still reporting 3.0GHz) with FSB reading of just over 100.5 mghz (i will assume this is due to memory OC to 1600 DDR3). i've also xfired with a HD6450 and this thing is a sub $500 beast.
Specc's:
AMD A4-3400 Boxed (STOCK FAN)
Gigabyte A75-D2H mATX (BIOS REV. 05)
8GB Kingston HyperX 1600 DDR3
RADEON HD6450 512Mb (in CrossfireX (6510d) (AGPU OC'd 625MgHz(Manual BIOS)
WD 750Gb Black Caviar HDD
450W Enermax Tomohawk II PSU
PS i will try and get screenies to backup my findings and obviously need to run some stress tests for stability. like to see more posts of peeps getting OC results by CLK Multiplier only good luck!

NinjaDuck is right it is not unlocked, because the only unlocked ones that are out so far are the A6 and A8
post #62 of 125
Quote:
Originally Posted by doom3d View Post

@ Razaille:
B0: I switched it off, because in turbo mode all cores receive increased voltage, but only one is clocked up. 3.5 GHz 1.375V is stable with cpu stress only. When the full system is stressed, 1.41V isn't enough ( the voltage isn't stable, overloaded supply), and the sys fan can't handle the situation ( max. 93°C reached). A desktop with better cooler and more robust power supply should work at 3.5 GHz.
It seems, that +50mV/100MHz is necessary above 2.85GHz, so probably 4.0GHz @ 1.65V may be reached at a desktop. Now I try to get an external cooler.
About stability: my settings were tested with cpu load only for 1 hour. According to my tests (prime95, aida64, performance test v7) at 2867 MHz I have to add ~50 mV to get stable system at full load (cpu+gpu+ram+hdd stressed). Yesterday I had one adobe plugin crash with the original voltages.
Don't worry about temperature, you have a desktop cooler. Extended industry range is from -40°C to +105°C. Most cars are running with an engine control unit at 85..90°C. Anything below 90°C is fine. link
edit2: they achieved 3712.5 MHz stable at 1.5V on A8-3850. I would need something around 1.42V for 3500 MHz stable, and +50 mV per each 100MHz. Almost the same voltage levels at same speed. link2

Care sending me your Pstates, I wanna try pushing it to 3.5 but I'd rather have your tested voltages FID and DID
post #63 of 125
@ Razaille: these settings were tested with cpu load (all cores at 100%, 15 min +) only and only valid for my system. You may need some voltage offset for your system.
I guess I will need +40 mV around 3.5 GHz because of my overloaded power supply, and almost no change below 1 GHz.

frequency, FID/DID, voltage, (max. temp)

100 MHz 0/8 525 mV
200 MHz 0/6 537.5 mV
650 MHz 10/4 625 mV
800 MHz 16/4 650 mV
1.0 GHz 14/3 700 mV
1.4 GHz 12/2 775 mV
1.8 GHz 20/2 850 mV
1.9 GHz 22/2 875 mV
1.95 GHz 23/2 887.5 mV
2.2 GHz 28/2 950 mV

2.4 GHz 20/1 1.0V
2.6 GHz 23/1 1.0375V

2667 MHz 24/1 1.05V ( 61°C)
2733 MHz 25/1 1.0625V
2800 MHz 26/1 1.0750V
2867 MHz 27/1 1.0875V
2933 MHz 28/1 1.1375V (!), (67°C)
3000 MHz 29/1 1.175V, 69°C
3067 MHz 30/1 1.2125V, 70°C
3133 MHz 31/1 1.2125V, 75°C
( we have ran out of FID values, must change DID)

3.2 GHz 16/0 1.2125V, 75°C
3.5 GHz 19/0 1.375V, 93°C

Tested stable with aida64+prime95+cpu burn-in:
3.2 GHz 16/0 1.25V, 85°C
3.3 GHz 17/0 1.30V, overheats at 25°C ambient
3.4 GHz 18/0 1.35V, overheats at 25°C ambient
3.5 GHz 19/0 1.4125V, overheats at 25°C ambient

unstable max.: it seems, that my laptop is restricted to max. 1.4125V, k10stat switches back here from higher settings.

3.7 GHz 21/0, 1.4125V at -5°C ambient, DVD case open: overheats
http://valid.canardpc.com/show_oc.php?id=2221481

My proposal for your P-states: (voltages tested with cpu load only)

P0 3.5 GHz 19/0 1.4125V or higher ( see my previous links, 3.7 GHz can be reached, and 1.5V is safe with good desktop cooling)
P1 3.2 GHz 16/0 1.25V (tested with aida64, stable) or 3.3 GHz 17/0 1.3V (aida64: stable)
P2 2867 MHz 27/1 1.0875V ( it hits a wall between 2867 MHz and 2900 MHz, so just save battery electricity bill with 2867 MHz)
P3 2.4 GHz 20/1 1V
P4 1.8 GHz 20/2 850 mV

P5 1000 MHz 14/3 700 mV or 800 MHz 16/4 650 mV => try to keep equal spaces between states measured on TDP graph

P6 200 MHz 0/6 537.5 mV => just enough to run background tasks, or notepad++. It spends surprisingly lot of time here while netsurfing. Saves battery life. It jumps up to P0.. P5 much more frequently, if you set it to 100 MHz.

Because of overheating problems on laptop at full system stress test, I will switch back to 3.2 GHz for every day usage, so most likely it will be:
P0 3.2 GHz 16/0
P1 2867 MHz 27/1
P2 2.4 GHz 20/1
P3 1.95 GHz 23/2
P4 1.4 GHz 12/2
P5 1 GHz 14/3 or 800 MHz 16/4
P6 200 MHz 0/6
Edited by doom3d - 1/29/12 at 8:50am
post #64 of 125
@doom3d

perfect, I will test it out! I usually lock my P-state to the highest while gaming, then I let K10state take care of the pstates when just surfing etc. You are totally correct regarding the voltages, on a desktop you got more breathing room, since the PSU on desktops are meant to handle a higher output while on a laptop you're kind of restricted. I didn't know about the 100Mhz issue, that is really good to know. You got some tight timings on your RAM...running at CL5?!!! bigeyedsmiley.png
post #65 of 125
I like the idea of this club, OP. thumb.gif

We should get this organized, i.e. have rules about submissions to join the club and resources about Llano. smile.gif
    
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post #66 of 125
@ Razaille: CL5 at unknown speed, according to cpuid. 1067 or 1333 MHz.

BTW, I haven't seen this here, so here you are: Llano cpu speed calculation

FID: frequency ID
DID: divider ID
bus speed: default value is 100 MHz

multiplier: 16 + FID value
divider: from divider ID table

DID divider
0 -> 2
1 -> 3
2 -> 4
3 -> 6
4 -> 8
5 -> 12
6 -> 16
7 -> 24
8 -> 32

CPU speed = multiplier * bus speed *2 / divider

Examples: FID|DID, FSB:
19|3, 100 MHz: (16+19)*100*2 / 6 = 7000/6= 1166 2/3, ~ 1167 MHz
12|2, 100 MHz: (16+12)*100*2 / 4 = 5600/4= 1400 MHz
0|0, 100 MHz: (16+0)*100*2 / 2 = 3200/2= 1600 MHz
1|7, 100 MHz: (16+1)*100*2 / 24 = 3400/24= 141 2/3 ~ 142 MHz
14|3, 100 MHz: (16+14)*100*2 / 6 = 6000/6= 1000 MHz

Don't forget to replace 100 MHz with your actual bus speed.

Now I have to leave, it's 7h30 AM here. smile.gif
post #67 of 125
i was going to fire my build up on sun but i was at work yesterday and went to a sales training and watched man on the ledge to tired atm.. im gonna test it after work
post #68 of 125
360360360360


...next up benckmarks...stay tuned ninjaduck...
post #69 of 125
and yes you make a valid pt it may still be locked..but it looks pretty don't it?
post #70 of 125
Quote:
Originally Posted by phatts420 View Post

and yes you make a valid pt it may still be locked..but it looks pretty don't it?

Lets just wait and see thumb.gif
    
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i5 6600k @4.4GHz Asus Z170 Pro Gaming EVGA GTX 960 SSC 2GB 16GB Kingston HyperX Fury 2666MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung SM951 NVME 256GB Seagate Barracuda 1TB Some Asus thing that sounds like an aircraft at... Be Quiet Dark Rock 3 
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Windows 10 Logitech something Super Flower Leadex Platinum 550w Phanteks Enthoo Luxe 
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Corsair M65 
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