What is the second VR? Is it the IMC/GPU? It goes up just as much as the CPU vr in max power from 3.8 to 4.6
The increase in CPU power is quite modest, 37% compared to 20% more clock+some volts.
But the IMC/GPU (in Prime??) adds another 30 watts and thats where it becomes bad i think...
What's this external pII you refer to? Tried looking it up but googling that didn't have the results I was hoping for.
What cooler are you using for that 4.7? i may have missed that.
The lower reading is UNB power consumption.Quote:
Originally Posted by Oese
When there is no actual video decoding task or 3D application running, the UNB (CNB+GNB) is usually consuming less than 9W.
The GNB is also very intelligent; when there is no GPU processing power required the SCLK will be clocked down to 304MHz (instead of 800MHz) and the SIMDs/RBs will be downcored to preserve power.
During CPU & CNB/IMC intensive tests the UNB power consumption never exceeded 9W.
Sometimes when there is alot of display activity the GNB will request a PState change which makes the voltage jump to 3D level, however these situations only last 1-2 seconds usually.
Under 9W power consumption is nothing short of impressive since the CNB part of the current FX CPUs is rated to ~15W.
FXs do have L3 cache, however I would imagine a GNB would consume more power than that.
The UNB power consumption peaks at 33W when the GNB is tortured in the similar manner as the CPU was (e.g. OpenCL computing).
There is an internal Pll inside the FCH which can be used to generate the BCLK frequency. The high-end FM2 motherboards have an external Pll which is usually used instead. While the internal Pll is "ok", it is has more limited adjustments and features than the external Plls and it is not as accurate.Quote:
Originally Posted by Yeroon
The internal Pll can generate "exact" (.0MHz) frequencies with 4MHz intervals only, while the external Plls are always 100% precise.
Gigabyte F2A85X-UP4 uses the internal Pll for BCLK frequencies below 136MHz and the external one for anything beyond that.
Asus boards never use the internal Pll.
I´m using Thermalright Ultra 120 Extreme heatsink with a single Enermax Magma 120 fan.
Ahh so it was only max power in that session and not during prime :)
Prime95, X264, Pov-Ray, Cinebench or LuxRender will not stress the GPU.Quote:
Originally Posted by Oese
I´d say the maximum consumption in games is probably around 70W (CPU) + 30W (UNB).
So around 100W in worst case ;)
Thanks for the lesson on the pll's. Great info.
How does the folding (gromacs) stress test compare to the prime95 in terms of power use? For me, folding is similar to CB r11.5 in terms of power/cpu temp, at least the work units I'm doing currently, and the gromacs test took 20 extra watts at the wall compared to regular folding/CB (145w cb, 165-170 gromacs).
With Gromacs you mean the StressCPU V2 available from folding.stanford.edu?Quote:
Originally Posted by Yeroon
If so, it is dated back to 2007.
Besides, I don´t think anything will come even close to P95.
However give me a link and I´ll give it a try.
prime95 wasn't good enough for me.Quote:
Originally Posted by The Stilt
Try coredamage0.8h too
http://damage.vigilantesoftware.com/
I also use Inteburntest.
Intel Linpack V11.0 (;)), problem size 20000 = Pmax 94,375W
StressCPU V2.0 (Gromacs) = Pmax 79,5W
CoreDamage 0.8h = Pmax 81,00W.
:up:Quote:
Originally Posted by The Stilt
Thank you! yet again
Yeroon
And how about ASRock and MSI FM2 boards?Quote:
Originally Posted by The Stilt
Asrock FM2A75 Pro4-M is pretty close to Asus F2A85-M Pro, however the production version is lacking the external Pll.Quote:
Originally Posted by superpyton
MSI FM2-A75MA-E35 has an external Pll, however the VRM is only 3+2 phase without any cooling.
Thanks :) One more question: you said, that all ASUS board use external PLL. Do you mean *all* (even cheap A55 -LE models) or *all A85* boards?
Only Asus F2A85-M Pro and F2A85-V Pro use external Pll.Quote:
Originally Posted by superpyton
The rest use the intergrated one.
My apologies if this has already been mentioned, but why only 1800Mhz NB on the 5800K benchmarks?
I've opened ASRock FM2A85X Extreme6 and FM2A75 Pro4 BIOS-es with AMIBCP. It's looks like HTT can be set up to 136 MHz. Does it mean that those boards also use internal PLL only?Quote:
Originally Posted by The Stilt
How high HTT clocks can be achieved on Trinity (stable, 24/7)? Something about 140 MHz, like on Llano (with good motherboard)? Or maybe external PLL allows higher HTT frequencies? If motherboard use internal PLL, HTT overclocking is probably limited... Could you say how much?
Does D-SUB out (VGA) still have problems on higher (>=108 MHz) HTT clocks?
Sorry for all questions, but after reading few reviews i still cannot find answers for my questions. Again, thanks for all answers. :)
Attachment 130473
The internal Pll is able to generate frequencies higher than 136MHz, however there must be some reason for the 136MHz limit.Quote:
Originally Posted by superpyton
Both Asrock and Gigabyte limit the internal Pll to 136MHz, however on Gigabyte boards (where the external Pll is also present) the external Pll will take care from there. The frequency output of the integrated Pll seem to come even more inaccurate with frequencies past 130MHz, so this might be the reason.
The A85X FCH & Trinity APUs have exactly the same limitations that the previous ones had, VGA is lost at around 120MHz BCLK, AHCI at 140-150MHz. The Trinity APUs themselves however have no issues running at 200MHz+ BCLKs when the frequencies are "properly" configured.
Gigabyte F2A85X-UP4 is known to hit 160MHz+ BCLK, Asus F2A85-M PRO I have been able to test briefly at 192MHz BCLK ;)
On Trinity there is just no point in overclocking the BCLK.
Fully unlocked K-series APUs are cheap as soap and high-end boards have DDR-2400 MEMCLK ratio available.
On Llano the only reason to overclock the BCLK frequency was the DRAM & NCLK frequency.
On Trinity you will NEVER need more than 111MHz BCLK overclocking ability, 111MHz BCLK = DDR-2666 ;)
At 111MHz you will still be able to keep the VGA and AHCI too.
Does this have to do with resonant clock mesh?Quote:
Originally Posted by The Stilt
No.Quote:
Originally Posted by sdlvx
The structure of the integrated Pll (CgPll1) has not changed since SBxx0 SBs as far as I know.
The integrated Pll is more than sufficient for default designs. It helps keeping the manufacturing costs lower and it probably requires less power than an external one.
The internal Pll is running off 25,000MHz source frequency while the external Pll generally use 14,31818MHz reference (more precise).
Also the feedback divider precision of the internal Pll is much lower;
To generate 100,0MHz reference (BCLK) frequency the internal Pll configuration is set to 25/25/1 (M/N/FD) which equals 1 -> 100,0MHz.
However the next possible combination is 25,5/26/1 which results 101,96MHz reference frequency.
On external Plls (with 'analog' M/N) the configuration could be 13/908/10 ((((14,31818/13)*908)/10)) which results 100,00MHz reference clock. The next step would be 13/909/10 which results 100,11MHz reference clock.
As you can see the output on the external Plls is much more precise, the available frequency is wider and there are features such as "Overshoot Reduction Technology" which helps keeping the system stable when the M/N values are changed in flight.
The Stilt is also known as the AMDpedia :)
started playing with my trinity and gigabyte up4 for a few hours on air ( coolermaster v6gt )... can get 1050 clock in gpu and 2133Mhz on ram @ 4.5ghz speed.
http://imageshack.us/a/img402/1760/vantage2133.jpg
Nice bartman1973! :clap:
I found something in the bios that has me a little confused...
http://i30.photobucket.com/albums/c3...burt/bios1.png
Does this mean that the minimum IMC (NB freq) would have to be 1950 for 2400 mem ?
1950x1.25 = ~2438 (the or bigger in play here).
The reason I ask is, when I leave it on "auto" CPU-z shows the IMC @ 1800... :shrug:
Just want to make sure I'm understanding correctly.
http://www.xtremesystems.org/forums/...=1#post5141619
there is your memory answer, courtesy of The Stilt
@ The Stilt, anyway to help Frank D to Fix Wrong read of memory timming once we open Overdrive , Turbov or other manufacturer OC software ?
~DDR3 2600 : http://valid.canardpc.com/show_oc.php?id=2527024
And Max freq of this chip , 2 previous did 6930 and 6960 :D
https://fbcdn-sphotos-f-a.akamaihd.n...57095250_n.jpg
http://valid.canardpc.com/show_oc.php?id=2535675
http://valid.canardpc.com/cache/screenshot/2535675.png
https://fbcdn-sphotos-a-a.akamaihd.n...04634547_n.jpg
Done.Quote:
Originally Posted by Pt1t
Can you please check which model is the clockgen on Biostar?
It is Realtek, however I cannot figure out the exact model from the available images.