Sabertooth 990FX rev. 1 with fx-9590

[Guyonskis]

I managed to get myself a fx-9590 for the price of a fx-8350. I know my board doesn't officially support this CPU (only up to 140W I believe), but I read others had success so I gave it a shot. Here's what I did:

- Disabled turbo
- under-volted to 1.36v
- Added spot cooler on VRM
- Bought Corsair H100i and added the two stock fans for push/pull

My mobo detects the CPU properly and is stable under Prime95 and OCCT. My idle CPU temp is 29°C and load is 55°C. My VRM temp doesn't even reach 50°C.

I'm now thinking of trying to bring it up to 5 GHz, but I'm not sure if I should.

My questions:

- Is VRM temperature the only factor to worry about when using an unsupported CPU?
- Will my 850W power supply be able to handle this? (I only have a single 290x)
- Is fx-8350 at 5.0Ghz and 1.5v == fx-9590 at stock, in terms of power consumption? If the motherboard can handle the former should it theoretically be able to handle the latter?


Semi-related question: To get readings for my VRM I need to use the Asus Embedded Controller (via AI Suite or HWiNFO). However when I do this Prime95 and OCCT lock within a few minutes, so I measure immediately after testing. Is there any way around this?

 

[eidairaman1]

Im on a R2.0 with a 8350 at 4.7GHz with Vcore set to 1.38, @GhostRyder might have a few suggestions

 

[GhostRyder]

I managed to get myself a fx-9590 for the price of a fx-8350. I know my board doesn't officially support this CPU (only up to 140W I believe), but I read others had success so I gave it a shot. Here's what I did:

- Disabled turbo
- under-volted to 1.36v
- Added spot cooler on VRM
- Bought Corsair H100i and added the two stock fans for push/pull

My mobo detects the CPU properly and is stable under Prime95 and OCCT. My idle CPU temp is 29°C and load is 55°C. My VRM temp doesn't even reach 50°C.

I'm now thinking of trying to bring it up to 5 GHz, but I'm not sure if I should.

My questions:

- Is VRM temperature the only factor to worry about when using an unsupported CPU?
- Will my 850W power supply be able to handle this? (I only have a single 290x)
- Is fx-8350 at 5.0Ghz and 1.5v == fx-9590 at stock, in terms of power consumption? If the motherboard can handle the former should it theoretically be able to handle the latter?


Semi-related question: To get readings for my VRM I need to use the Asus Embedded Controller (via AI Suite or HWiNFO). However when I do this Prime95 and OCCT lock within a few minutes, so I measure immediately after testing. Is there any way around this?

Ill try and answer your questions in order:

1: No, sometimes support of just reading what chip it is can be a problem. But that's rarely a case on any of the 990FX boards unless they are the low end ones.
2: Yes, way more than enough!
3: I think the 9590 has a lower vcore than even that, so yes you should be fine.

As far as the Sabertooth support of the 9590 goes, I have seen plenty of people put 9590 chips on it and it seems to handle it just fine. However I am speaking specifically about the R2.0 variant as the major difference between the R1.0 and R2.0 is the Power Phase (6+2 versus 8+2). Personally to me it should still handle it fine as I know people who have overclocked to 4.8ghz on their 8350 chips without problem. Just make sure to have come fans keeping airflow going over the VRM just to make sure temps stay fine.

 

[buildzoid]

The Sabertooth Rev 1 did 5+ Ghz on the regular FX 8350 so 5Ghz on an FX 9590 should be none issue. Also the Rev 1 and 2 have almost identical VRMs AFAIK so if the Rev 2 supports it so should the rev 1.

 

[Mr.Scott]

My 9590 on a revision 1.0 board.
It works just fine.

 

[Guyonskis]

Thanks guys! You really put my mind at ease.

That's an impressive overclock Mr.Scott! What kind of cooling do you have? Are you cooling your VRM?

 

[Mr.Scott]

Thanks guys! You really put my mind at ease.

That's an impressive overclock Mr.Scott! What kind of cooling do you have? Are you cooling your VRM?

That was on high end water.
Yes, fan on VRM.

Realistically......if you're not on water, pass on this chip. I've seen it throttle at stock on just air.

My 8320 clocks better and is cooler.

 

[JATownes]

I'm running a revision 1 with a 9370 @ 5.0 under a full water. Never had an issue. You should be just fine.

 

[xfia]

That was on high end water.
Yes, fan on VRM.

Realistically......if you're not on water, pass on this chip. I've seen it throttle at stock on just air.

My 8320 clocks better and is cooler.

i have seen people getting nice clocks on the 95w cpu's.. some people say they are low bleed and binned that way. 4.7ghz even in the 1.3v range.. my 6350 does 4.4ghz at 1.42v

 

[RealNeil]

I have the FX-9590, but it's not OC'd yet.
It came with an AIO and that keeps the temps pretty low. I can't imagine running this CPU on air.
I just sold my FX-8350 and it's Mainboard because the FX-9590 is new and runs fine.

 

[buildzoid]

I have the FX-9590, but it's not OC'd yet.
It came with an AIO and that keeps the temps pretty low. I can't imagine running this CPU on air.
I just sold my FX-8350 and it's Mainboard because the FX-9590 is new and runs fine.

Flank3r did 5.3Ghz with an FX 9590 under a Noctua NH-D14

 

[Mathragh]

I'm running my 8350 at 4,8GHz at 1,45V with this board. The difference between idle and full CPU load can be close to 350Watts for me according to corsair link. I'd say this board should handle that 220W CPU just fine Certainly with some airflow over the VRM heatsinks.

 

[Johan45]

Flank3r did 5.3Ghz with an FX 9590 under a Noctua NH-D14

Not P95, fun run maybe. I think the OP wants a "stable" machine.

 

[Guyonskis]

I gave it a shot. Best I got stable was 4.9Ghz at 1.5V.

I rarely get actual errors in Prime95 and OCCT, and never BSOD. Usually my system just hangs. Is that indicative of anything?

 

[Mr.Scott]

I gave it a shot. Best I got stable was 4.9Ghz at 1.5V.

I rarely get actual errors in Prime95 and OCCT, and never BSOD. Usually my system just hangs. Is that indicative of anything?

Yup. Heat or power related.

 

[GorbazTheDragon]

I have the FX-9590, but it's not OC'd yet.
It came with an AIO and that keeps the temps pretty low. I can't imagine running this CPU on air.
I just sold my FX-8350 and it's Mainboard because the FX-9590 is new and runs fine.

Any of the massive air coolers should handle it fine... I've seen plenty of bench stable, air cooled 5+GHz 8350s on hwbot...

 

[RealNeil]

Any of the massive air coolers should handle it fine... I've seen plenty of bench stable, air cooled 5+GHz 8350s on hwbot...

Yeah, so have I, but the FX-9590 (the one that I kept) is a 220Watt CPU, the FX-8350 is a 125Watt part.

I've been running my FX-8350 with a 240mm Asetek AIO and four Push/Pull Cougar Vortex fans. Temps were always jack-nothing low with that. It was overkill.

The FX-9590 has a CoolerMaster Seidon 120mm AIO to cool it with. I replaced the single fan with two Cougar Vortex 120mm fans in push/pull. (running at full speed)
I had planned to replace this with a 240mm AIO, but this one cools the CPU as well as the 240 does the 8350.

I imagine that there are air coolers that will tame this FX-9590, but I don't want to mess with them.

 

[Mr.Scott]

Any of the massive air coolers should handle it fine... I've seen plenty of bench stable, air cooled 5+GHz 8350s on hwbot...

Hahahaha......Believe half of what you see and none of what you hear.
At HWB, just because it's marked as air doesn't mean it really is.

 

[Mr.Scott]

Yeah, so have I, but the FX-9590 (the one that I kept) is a 220Watt CPU, the FX-8350 is a 125Watt part.

I've been running my FX-8350 with a 240mm Asetek AIO and four Push/Pull Cougar Vortex fans. Temps were always jack-nothing low with that. It was overkill.

The FX-9590 has a CoolerMaster Seidon 120mm AIO to cool it with. I replaced the single fan with two Cougar Vortex 120mm fans in push/pull. (running at full speed)
I had planned to replace this with a 240mm AIO, but this one cools the CPU as well as the 240 does the 8350.

I imagine that there are air coolers that will tame this FX-9590, but I don't want to mess with them.

Air need not apply. Period.
What do you consider "jack nothing low" for temp? I don't mean at idle either. I mean after an hour of P95.
Pic or it didn't happen.

 

[RealNeil]

Air need not apply. Period.
What do you consider "jack nothing low" for temp? I don't mean at idle either. I mean after an hour of P95.
Pic or it didn't happen.

I didn't take a pic, but temps were good when I checked them after gaming for a while. (42C was where it was right afterwards)
It's in the low to mid-30s at idle. Remember that this was the 125W part and a 240mm AIO cooler in push pull with good fans.

I haven't run P95 on anything in a long time. So nothing happened, LOL!

 

[Mr.Scott]

I didn't take a pic, but temps were good when I checked them after gaming for a while. (42C was where it was right afterwards)
It's in the low to mid-30s at idle. Remember that this was the 125W part and a 240mm AIO cooler in push pull with good fans.

I haven't run P95 on anything in a long time. So nothing happened, LOL!

I understand.
Keep in mind that there are only a few games that utilize more than 4 cores, so chances are you never saw full load on all cores. I've benched full load on all cores and I can tell you straight up, there is no AIO that will cover you at 5 gig 24/7 stable. It'll heatsoak in 2 hours or less.
You'll need a full blown high end custom loop to stand a chance...................or sub ambient cooling.
On the sub ambient cooling...........the 9590 will bring my chiller to it's knees in about 4 hours of full load benching. It gets that hot.

 

[GorbazTheDragon]

Yeah, so have I, but the FX-9590 (the one that I kept) is a 220Watt CPU, the FX-8350 is a 125Watt part.

I've been running my FX-8350 with a 240mm Asetek AIO and four Push/Pull Cougar Vortex fans. Temps were always jack-nothing low with that. It was overkill.

The FX-9590 has a CoolerMaster Seidon 120mm AIO to cool it with. I replaced the single fan with two Cougar Vortex 120mm fans in push/pull. (running at full speed)
I had planned to replace this with a 240mm AIO, but this one cools the CPU as well as the 240 does the 8350.

I imagine that there are air coolers that will tame this FX-9590, but I don't want to mess with them.

There should be little difference between a 5GHz 8350 and a similarly clocked 9590. Only if you are using stock voltage/power settings will the 9590 be less conservative with the clocks/volts. The only air coolers I would consider running with any of those 8 cores at high OCs are massive things like the NH-D14/D15, BQ dark rock pro 3, and Cryorig R1 universal. Other big thing when air cooling very high power systems is that you need to have good airflow around the CPU area. It's no use having a massive heatsink if you are just going to be blowing hot air through it. One of the biggest advantages water cooling has is that you can exhaust the heat straight out of the case rather than blow hot air everywhere.

From what I've seen the biggest challenge with these CPUs is not keeping the die itself cool, rather the VRM. Had a guy over at OCN with an 8320 at stock speeds on some 970 motherboard, and he was constantly BSODing in games because the VRM was burning. Without changing his BIOS settings he got it stable by putting a fan over the VRM heatsink. That said, the CPU and VRM are to an extent thermally connected, so cooling one better keeps the other cooler (also have to consider varying leakage currents at different temps). Basically more power ==> higher temps ==> more power.

 

[RealNeil]

I understand.
Keep in mind that there are only a few games that utilize more than 4 cores, so chances are you never saw full load on all cores. I've benched full load on all cores and I can tell you straight up, there is no AIO that will cover you at 5 gig 24/7 stable. It'll heatsoak in 2 hours or less.
You'll need a full blown high end custom loop to stand a chance...................or sub ambient cooling.
On the sub ambient cooling...........the 9590 will bring my chiller to it's knees in about 4 hours of full load benching. It gets that hot.

Full load on all cores for two or four hours at a time is probably something that this box will not see for a long time. They will have to change existing software a lot before it does.

Other big thing when air cooling very high power systems is that you need to have good airflow around the CPU area. It's no use having a massive heatsink if you are just going to be blowing hot air through it. One of the biggest advantages water cooling has is that you can exhaust the heat straight out of the case rather than blow hot air everywhere.

From what I've seen the biggest challenge with these CPUs is not keeping the die itself cool, rather the VRM. Had a guy over at OCN with an 8320 at stock speeds on some 970 motherboard, and he was constantly BSODing in games because the VRM was burning. Without changing his BIOS settings he got it stable by putting a fan over the VRM heatsink. That said, the CPU and VRM are to an extent thermally connected, so cooling one better keeps the other cooler (also have to consider varying leakage currents at different temps). Basically more power ==> higher temps ==> more power.

Yeah, I ran into problems like that years ago. My case is a cheap one, but it has excellent airflow because of my fan configuration.
I have two 140mm Cougar Vortec fans running at full speed, drawing air into the front of the case. Also, I have three more Cougar Vortec 120mm fans in there, also running at full speed.
One is on top of the case exhausting heat, and the other two are on the AIO in Push/Pull exhausting air out of the back end.
All in all it's a pretty potent cooling solution for the use that I give it considering that ambient temps stay at 72F in my computer room all of the time.

Here are a few pics. One is the Phobia six-way fan splitter that keeps all of the fans at top speed.
The other is a Pic of the build. The two ACX GTX0760 4GB GPU's don't leave much heat inside the box. I can feel a lot of heat exiting the rear of the case where they are.