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AMD Kaveri A10-7850K Overclock Guide - Page 49

post #481 of 1332
Quote:
Originally Posted by Spectrum Legacy View Post

Oh my bad Abyssmal, I thought you were using 7850k. From what I gather, 7700k behaves mucho-stablo:) Also you got really tight timings there, I can't go to 160 row freq cycle, otherwise its cmos reset button for me. 10 - 12 - 12 - 30 - 1T worked but with errors in prime after 15mins at 1.65V, so I'm back at stock xmp2 2400 11-13-13-30-1T again.

Have you tried to run some benches how your beastie performs (especially memory performance)? It would be interesting whether its viable to push those timings, or focus on something else instead to gain performance or trim thermals a bit. Anyway good job!

On iGPU I'm at 960mhz, 2000NB, 1.3125V 60% LLC (medium), 1.222V APU PCIE VDDA (1.206V started to crash under full system stresstest past 30min). However I consider my chip has sweetspot at 900mhz iGPU, 2400 ram, 2000 nb and possibly 3.7~4Ghz cpu, in terms of performance/thermal/power ratio for 24/7 use (C6+internal cpu offset definitely helps with power when idling the cores).
Thanks! So what is offset? When does it kick in? Always? Loaded only? Wow, I'm quite rusty on those technologies.

As I obviously have some very playful memory/iGPU - I am thinking of making a nice frquency-timings benchmarks 1600-2400MHz at stock CPU/NB/iGPU and 4.3/2000/1000MHz which is typical OC on those chips. Just to determine is ram capped bythe 1800 NB, and if iGPU is capped from low MHz memory/timings.

Preliminary - what I have till now:
CPU 3.4GHz, RAM 2133MHz 9-11-11-31-1T-350 (XMP), NB 1800MHz, iGPU 1028MHz from BIOS, 14.3_Beta_V1.0 driver:
Vantage P8831/8471/10123

Same settings, but NB 2000MHz:
Vantage P8833/8455/10201
AIDA64 read/write/latency 22134 / 11113 / 77.4
SuperPI 8M 4m 28.682s

CPU 3.4GHz, RAM 2400MHz 9-11-11-31-1T-350 (XMP), NB 2000MHz, iGPU 1028MHz from BIOS, 14.3_Beta_V1.0 driver:
Vantage P9127/8805/10252

Lowering tRAS 31->29:
SuperPI 1M 24.331s
Vantage P9217/8922/10231

Lowering tRFC 350->300:
AIDA64 23227 / 11319 / 73.4
1M 24.075
8M 4m 24.635s
Vantage P9263/8958/10316
post #482 of 1332
I've got a bit of a headache and trying to figure out where it is. As this thread is massive and seems people know what they're doing I'll ask here, I recently rebuilt a desktop with:

AMD A10-7850
ASRock FM2+a88x +Killer (Fatal1ty edition cause black and red)
G.Skill Ripjaws X F3-17000CL11D 8 gig (same package, not on ASRock's memory QVL)
BFG 550 watt power supply
I'm leaving the rest out because as of now it's not relevant. What happens, happens regardless of the stuff plugged in.

Any time I change ANY speeds except the onboard GPU the system powers off (hard reboot) briefly and back on again. It then does one of two things: Black screen and non-functional or it'll try to boot to Windows just to tell me everything is corrupt and I can go jump off a cliff. Resetting the CMOS fixes this problem and resets tentatively to 1333 mhz RAM, hard reboot, restarts at 1600 mhz ram and I can boot just fine. A couple days ago I had manually set my RAM to 1866, it was fine for 8 or so hours with no load but when I started a game of Titanfall after around 3 - 5 mins the system hard locked on me, forcing a power supply switch off, and resetting everything again.

I've tried XMP with zero success. I've tried manual timing with slight success until it bore a load. Since it's been a while since I've had a desktop never mind overclocked said desktop I have to ask: is being set to 100 mhz for a CPU/FSB speed normal? If so what the crap, and are things so tightly specced today that raising FSB speed by 33 mhz will create headaches without a voltage increase? The last time I really toyed with ocing anything was during the Athlon XP days and that was mild and very painless. Prior to that I had a decent increase from an Athlon 700 once I upped the FSB to 133 with 133 ram and did some tooling around with multiplier settings.

Any help or direction to use my RAM at it's specced speeds would be great and I'll read through the rest of this thread as well.
post #483 of 1332
Quote:
Originally Posted by ASCI Blue View Post

Windows just to tell me everything is corrupt and I can go jump off a cliff.
This made my day! Good morning, fellas.

Hope I understand correctly.
If' I'm not still asleep - you say you have your FSB at 133MHz?! That is way past anything reasonable for today's technology! I cannot post at 105MHz. Lower to 100MHz or auto and just play with multy's and timings.
post #484 of 1332
I couldn't get it to do anything at 133, I was referencing when 700 Mhz was fast that I had to run the fsb at 133 to use my 133 mhz RAM.
post #485 of 1332
Quote:
Originally Posted by Spectrum Legacy View Post

Whether it affects NB and IMC in some way, I don't know. What you could try is loading stock bios profile again, or lets say something conservative like 4ghz cpu, stock igpu, ram clock/timing you want to be using and then rising VDDA up slowly, by 0.025V increments or faster in 0.05V bumps. I'm still at 1.206V myself.
About the VDDA, that MIGHT just be the problem (not too sure yet). Mine was set to "auto" and was showing up as 1.052V in BIOS. Don't know if it was supposed to choose such a low value
post #486 of 1332
Sounds like your motherboard is off, should not do that.

Update to the latest BIOS, see if it helps.
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MiniZEN
(12 items)
 
   
CPUMotherboardGraphicsRAM
Ryzen 1800X Asrock Fatal1ty X370 Gaming ITX/AC MSI RX Vega 64 32GB DDR4 G.Skill Flare X 
Hard DriveHard DriveHard DriveHard Drive
WD Black 4TB WD Red 2TB Samsung 960 Evo 512GB Crucial MX300 1050GB 
CoolingMonitorPowerCase
Noctua NH-L12 AOC AG322QCX Corsair SF600 Ncase M1 
CPUMotherboardGraphicsRAM
Intel Broadwell-E i7 6950X 10C/20T MSI X99 GODLIKE Gaming Radeon Pro Duo Corsair Dominator Platinum 32GB DDR4 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 SSD Seagate Desktop Drive Western Digital Red Samsung 850 Evo SSD 
Hard DriveHard DriveOptical DriveCooling
Intel 750 NVMe SSD Intel 600P Samsung DVD BeQuiet! Silent Loop 280 
OSMonitorPowerCase
Windows 7 64-bit Acer XG270HU 27-inch WHQD AMD Freesync Seasonic Prime 1000W Dark Base Pro 900 
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post #487 of 1332
I have the latest bios on Asrock's site which is 1.7, I've seen several people with 1.8 and I'm curious as to where they got it. The only thing 1.7 has helped is allotting more ram to the GPU.
post #488 of 1332
Quote:
Originally Posted by ASCI Blue View Post

I have the latest bios on Asrock's site which is 1.7, I've seen several people with 1.8 and I'm curious as to where they got it. The only thing 1.7 has helped is allotting more ram to the GPU.

Hello there!

I have the same motherboard and 7850k as you do. I have used the 1.70bios, since that is the current live version, however 1.80 was out for quite some time, but ASRock pulled it out for unknown reason. You can still get it at softpedia for example and then update the bios via USB stick (with either of FAT file formats). 1.80 addressed Gpu frequencies, but I haven't noticed anything different (I updated in the hope that it will help stabilize things for me). It seems that bios updates aren't ASRock's forte and I'm kind of holding out any further OCing until they release new bios, just in case (my system started to act weird at 960mhz iGPU).

EDIT: I'm rolling back to 1.70 bios, as that 1.80 caused enough headaches over the last 2days and no wonder ASRock pulled it out.

As Abyssmal said, leave FSB preferably on auto, or 100mhz. It also affects your sata, usb and other controllers - sata in ahci mode is very sensitive regarding FSB frequency past stock values. I had no troubles with ram whatsoever up to 2133mhz, just disabled xmp (set to auto), timings set to auto (power saving dissabled of course) and frequency set to 2133mhz and it worked fine at 1.65V (thats rated voltage on my ram, but for 2400 and 2666 freqs). However aiming at 2400mhz I've hit the wall until I started to increase in few steps that dreaded APU PCIE VDDA voltage. Try to do the same, but since you have different ram kit, I don't know what exactly will work for you and more importantly at which point it will. Maybe you have thermal issue on VRM (the heatsink with "A88x+ Killer" logo), since I had it as well and it caused crashes within 30minutes - now I use slightly higher voltage, but put LLC for both cpu and nb/gfx on auto (regular mode), until I get stable again . Try going slowly with stock cpu/igpu frequencies and up the ram slowly in auto mode (it should use bit loose timings that way). Hope it will work for you.

Quote:
Originally Posted by Abyssmal View Post

Thanks! So what is offset? When does it kick in? Always? Loaded only? Wow, I'm quite rusty on those technologies.

Rusty? My last AMD OC-ing session was in between1996 (K5 line of chips) and ~2002-ish with early Durons. biggrin.gif
Anyway, I was reffering to the feature I use in my bios which lets you choose CPU internal offset (something like automatic offset, which allows to dip down the voltages when cpu is idle, which works quite well with enabled C6) as opposed to the PWM Fix mode (which tries to push same exact voltage 24/7 regardless of load).
Standard voltage offset I consider as fine-tunning tool, but you can as much use only CPU VID to alter voltages as much as using only offset and leave CPU VID stock. I gather there is difference between the two in how some of the features will perform under those circumstances, e.g. CnQ, Turbocore and power managements. Also since we can't see actual NB voltage, I would advise caution with that one. I personally have both offesets at +0V and again, if its bad thing, I would welcome advice myself as of why it is so.
Edited by Spectrum Legacy - 3/29/14 at 9:51am
post #489 of 1332
I have no problems using my HyperX ram a stock speed 2400mhz @ 1.65volt. Have same mobo and apu as you two.
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post #490 of 1332
I will leave my fsb on 100, what do I want the northbridge set to since I frequently see a nb higher than my 1800 when I see faster ram speeds? By power saving you do mean the power down whatchercallit under the ram timing not some other random power save feature correct?
I also notice that occasionally the hs with the Fatal1ty logo runs a tad warm compared to the rest of the system. I've had issues due to heat in the past (700 mhz days).

My ram is rated for 2133 at 1.6 volts, I've seen the manufacturer recommend bumping up to 1.65 for 2133 as well. I haven't done anything voltage wise for anything aside the ram yet but if tolerances are tighter now than in the past this makes sense to why my rig might be cranky.

LLCs are currently on auto as I have no idea what the crap they do.
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