Sabertooth 990fx//FX 8350//Custom Loop Help

DNRDustin · Oct 19, 2015

Mandrake4565 · Oct 19, 2015

Just out of curiosity, why are you planning on watercooling the VRM and Nb section. In most situations just putting a fan on that area is sufficient.

DNRDustin · Oct 19, 2015

Sufficient isn't good enough. I do plan to actively cool the area with my unused stock fans, but that's just a step on the stairway to greatness. Plus I want to be able to surf the internet, I think if I could squeeze a few hundred more mHz out of my chip, updating my facebook will be super quick.

bassnut · Oct 20, 2015

Having cooled my NB and VRM on my CHVz, while it has helped reduce and add stability to my Socket temps I have found no benefits beyond that to say it has given me a better OC over the old way I had cooled the area using fans. That being said if this is what you want to do go for it and good luck. Never heard of these blocks so will not comment on them beyond this.

Johan45 · Oct 20, 2015

Personally, I didn't like the looks of the CPU block, it looks flimsy to me also looks like it doesn't use a backplate which IMO is very necessary to get good even pressure on the CPU without stressing the motherboard too much. This is the one I have and I know it works very well. http://koolance.com/cpu-380a-processor-water-block

Mandrake4565 · Oct 20, 2015

DNRDustin said:
Sufficient isn't good enough. I do plan to actively cool the area with my unused stock fans, but that's just a step on the stairway to greatness. Plus I want to be able to surf the internet, I think if I could squeeze a few hundred more mHz out of my chip, updating my facebook will be super quick.

Dustin, maybe I wasn't being specific enough. I'll start by saying, if you're doing it for aesthetics I get it and go for it. What I meant by sufficient was, I've benched my Fx 8350 on my Sabertooth and CHV well over 5 Ghz with the Nb Freq near 3k with only fans keeping the heatsinks on the VRM/Nb cool. Adding water to cool them isn't going to hurt and can be beneficial, just not necessary in most cases. Again if you're doing it just because you want to, go for it.

I also agree with Johan that the Cpu block does look a bit flimsy. The Koolance 380 is a much better block as well as the EK-Supremacy I have. I will add that the Ek Supremacy also come with mounting hardware for Intel.

DNRDustin · Oct 20, 2015

Great responses, thanks guys. I had hoped for some glory story like "it's the best upgrade, liquid cooling the vrm/nb gave me headroom for another 4-500mhz over cooling with a fan", but that doesn't appear to be the case. I'll just put this in the "want" category right next to "overkill". I'm still going to do it, but won't be disappointed by a lack of significantly better results and "wasted" money. As far as their CPU block, I see what you're all saying.

DNRDustin · Oct 20, 2015

Mandrake4565 said:
Dustin, maybe I wasn't being specific enough. I'll start by saying, if you're doing it for aesthetics I get it and go for it. What I meant by sufficient was, I've benched my Fx 8350 on my Sabertooth and CHV well over 5 Ghz with the Nb Freq near 3k with only fans keeping the heatsinks on the VRM/Nb cool. Adding water to cool them isn't going to hurt and can be beneficial, just not necessary in most cases. Again if you're doing it just because you want to, go for it.

I also agree with Johan that the Cpu block does look a bit flimsy. The Koolance 380 is a much better block as well as the EK-Supremacy I have. I will add that the Ek Supremacy also come with mounting hardware for Intel.

My understanding is that upping the CPU/nb really helps these fx chips stability. Currently I'm [email protected]. Core 7 is the weak link, always wanting more voltage. Maybe more CPU/nb would help? What voltage did you need at 3000mhz? On the other hand I've read cpu/nb and htt should be as close to ram speed as possible(16g vengeance pro @1866), or maybe that pertains to fsb oc stability?

Mandrake4565 · Oct 20, 2015

I run my Nb freq at 2600 daily with my 1866 sticks. For me to be stable at with my 8350 @ 4.7 Ghz with my Nb Freq at 2600 with 2x4g of 1866 Mhz memory I need my Cpu Nb V at 1.3875. It took a lot of testing for me to get my ram stable at 1866 Mhz or above. You having 16g of ram will put more stress on the Imc so you may need more voltage to get the sticks stable at 1866. Try dropping the ram down to 1600 Mhz and see if the #7 worker still quits, if it doesn't my bet is you need more Cpu Nb voltage not Cpu V.

DNRDustin · Oct 20, 2015

Mandrake4565 said:
I run my Nb freq at 2600 daily with my 1866 sticks. For me to be stable at with my 8350 @ 4.7 Ghz with my Nb Freq at 2600 with 2x4g of 1866 Mhz memory I need my Cpu Nb V at 1.3875. It took a lot of testing for me to get my ram stable at 1866 Mhz or above. You having 16g of ram will put more stress on the Imc so you may need more voltage to get the sticks stable at 1866. Try dropping the ram down to 1600 Mhz and see if the #7 worker still quits, if it doesn't my bet is you need more Cpu Nb voltage not Cpu V.

Bumped up to [email protected](1.48w/ultra-high llc, 4.8 stable and seems to be as "high" as I can go thermally), core 7 doesnt pass 10 min p95 mark at 1600, core 8 doesnt pass 20 min mark at 1333. So both cores on that module seem to be having issues, decided to drop down to 1066(and what a noticeable decrease in package/core temps) but still not stable and dropped cores on multiple modules with this setting! Although this approach feels promising it may not get me what I'm after.

Mandrake4565 · Oct 20, 2015

At what point have you been able to pass 2 hours of prime blend? I find when I'm really looking to push it's best to find a stable point then push further. If you just kepp pushing and pushing it makes it very difficult to find stability.

DNRDustin · Oct 20, 2015

Mandrake4565 said:
At what point have you been able to pass 2 hours of prime blend? I find when I'm really looking to push it's best to find a stable point then push further. If you just kepp pushing and pushing it makes it very difficult to find stability.

[email protected](1.48v under load) not to drift too far off topic, I will post a thread with screenshots and such in the amd cpu forum for help with the OC.

NZKshatriya · Oct 20, 2015

^^^ this x100

Mandrake4565 · Oct 20, 2015

DNRDustin said:
[email protected](1.48v under load) not to drift too far off topic, I will post a thread with screenshots and such in the amd cpu forum for help with the OC.

If your getting to 1.48 under load you may want to tame the LLC a bit. What do you have it set to? I find ultra high for a normal Oc is usually best. Note though, you may have to set the Cpu V a bit higher to find stability again.

Also it's your thread, you can take it as far off topic as you wish.

DNRDustin · Oct 20, 2015

Mandrake4565 said:
If your getting to 1.48 under load you may want to tame the LLC a bit. What do you have it set to? I find ultra high for a normal Oc is usually best. Note though, you may have to set the Cpu V a bit higher to find stability again.

Also it's your thread, you can take it as far off topic as you wish.

It's set to ulra-high(cpu_nb at high). I'm seeing ~+.02v from target voltage, and ~+.04 when set to extreme. Over-Current protection is set to 130% btw.

Mandrake4565 · Oct 20, 2015

DNRDustin said:
It's set to ulra-high(cpu_nb at high). I'm seeing ~+.02v from target voltage, and ~+.04 when set to extreme. Over-Current protection is set to 130% btw.

Interesting, mine only goes up .01 from set voltage with Ultra High. Not really a big issue though. Anyhow, you may just need a lot more voltage for 4.9. Reason I run 4.7 daily is because the increase for my chip above 4.7 is silly. I do have mine stable 2 hours prime blend up to 5.1 but I need something like 1.52-1.53 V to run it there. To me the gains over 4.7 for what I use it for do not justify me running daily at that voltage.

DNRDustin · Oct 20, 2015

NZKshatriya said:
^^^ this x100

what is "this"?

- - - Updated - - -

Mandrake4565 said:
Interesting, mine only goes up .01 from set voltage with Ultra High. Not really a big issue though. Anyhow, you may just need a lot more voltage for 4.9. Reason I run 4.7 daily is because the increase for my chip above 4.7 is silly. I do have mine stable 2 hours prime blend up to 5.1 but I need something like 1.52-1.53 V to run it there. To me the gains over 4.7 for what I use it for do not justify me running daily at that voltage.

that seems to be where I'm at, just hitting the wall, though I still haven't put a fan on the vrm and may be able to push a little higher once I do.

Thick8 · Oct 20, 2015

DNRDustin said:
Looking to start building a parts list for my loop, going to include the VRM's and NB. Anyone have any first hand experience with Anfi-Tec, or other blocks you might recommend for my build?

The Anfi-tec blocks are great looking blocks and maintain great temperature. The ports are somewhat close together so you will need adapters to use hard acrylic tubing with compression fittings. I bought the 3 block set.
There are some pics on page 12 of the thread you referenced in your original post.

DNRDustin · Nov 23, 2015

OP updated with the beginnings of my parts list. I'm excited, and getting ready to pull the trigger on this loop.

DNRDustin · Nov 24, 2015

May not put the vrm or nb under water, IDK though.

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