Issue With New CPU

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gogman25

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Jan 20, 2013
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Hey lads and ladies, I seem to be having an issue with a new CPU I just acquired.
Before I get started:
MOBO: Sabertooth 990FX USB 2.0
GPU: GTX 760
OLD CPU: AMD FX-4170
NEW CPU: AMD FX 9590
PSU: 750W CORSAIR

Okay, that was a quick rundown. At first I had the following issues: Screen refusing to turn on at start-up about 50% of the time.
Freezing during start-up repair
At boot up (little windows glowing loading screen) freezing once again. 🙁

However, after some tinkering it dawned on me to disabled 4/8 cores. Sure enough, I'm here typing it now. The only catch is... how the hell do I get my system to use 8 cores? :/

Cheers :)
 
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I think you might be a bit incorrect son but good try.

:)
 
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What kind of cooler are you using? The 9590 is a hot chip and power hungry as it's a factory oc'd amd 8 core pushed to the limits out of the box. What bios version do you have? Asus recommends version 1708 and makes a special note about the thermals of that cpu.

@ CountMike, the fx 9590 is in fact an 8 core amd cpu. It's a factory overclocked fx-8xxx. The statement that it's not and the user needs a different cpu to get 8 cores is completely false. The op is having an issue with the cpu running properly with all 8 cores enabled and has had to disable 4 of the 8 cores in order to get it to run stably.
 
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This.

You need about the equivalent to a Corsair H80 minimum to properly cool that beast of a CPU.
 
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I built multiple systems for customers using the Sabertooth 990FX with FX 8000 series CPUs with no issues. He either needs an updated BIOS or needs to make sure his cooling is good enough to keep the CPU from thermally throttling.
 
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Are you nuts? The Sabertooth boards are among some of the finest you can buy, regardless of what chipset the model may be a part of. Definitely NOT a motherboard issue, at least as far as it not being good enough quality for the 9xxx series chips.

To start with, the 9xxx series chips are SUPPOSED to be used with a 1000w PSU, per AMD, but we know that a VERY good 850w unit is fine. What MODEL of 750w Corsair PSU do you have and how old is it?

What is your CPU cooler model? Are you using the cooler from your older FX chip with that thing?

What speed of RAM and how many modules are you running?

Have you updated the BIOS, as mentioned already? Those 9xxx series chips were not a "thing" when that board was released, and did not have microcode support for them at that time which means the proper voltage, multiplier and cooling profiles are probably not present.

 
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As for the motherboard, if I recall correctly it's an 8+2 power phase board. One of the better boards out there and generally recommended for overclocking high tdp fx cpu's among the overclocking community. Essentially that's what a 9590 is, an overclocked (by the factory) fx cpu and the motherboard should be capable of handling it with the proper bios and cooling like others have already mentioned.
 
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In summary:
1. Your Sabertooth is a high quality board that can handle that CPU but it may need a BIOS update to do so.
2. The FX-9xxx series draws a lot of power, so it and the VRMs on the board need decent cooling. The heavy heatsinks on that board's VRMs (I have it too) just need some airflow over them to be sufficient; front intake and rear exhaust fans should be sufficient.
3. The Corsair "CX" (if that is what you have) starts out well, but is made with inferior capacitors that can't take heat, so they rapidly degrade until the PSU loses capacity and/or goes out of spec, causing stability issues. It won't kill your system, but may not be able to run it, at least not for long.
 
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update your bios and do not use the stock cooler, it has 8 cores not 9 dont listen to what that guy said, That cpu comes OC'ed out of the box so therefore you need a cooler. I personally would have gone the intel route since most games dont take advantage of 8 cores sadly
 
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Yes, VRM throttling can be a problem with these chips, on any board, but I think, probably not at startup. I suspect BIOS, cooler mounting, cooler model or PSU is probably to blame. The first thing to do would be to take the side panel off, and leave it off, until the problem is resolved. The second thing to do would be to install the latest bios. Go from there.
 
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"That guy", wasn't saying it has 9 cores. He was saying that according to Mike's naming scheme assumption, that's what it would have. It was just an attempt at being witty, not seriously saying it had 9 cores.
 
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