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Asus A88X-Plus with 2X8 GB Kingston HyperX Savage 2400MHz won't run at advertised speed

post #1 of 9
Thread Starter 
Hello everyone!

I've been lurking for a while and reading a lot, and here's my first post.

I hope this isn't considered just another thread on a common problem, but I just cant find the answer after searching everywhere and was hoping you guys could help me.

I have recently built a HTPC with the following specs:

ASUS A88X-Plus, Socket-FM2+
AMD A10-7800
Cooler Master V550S, 550W PSU
HyperX Savage DDR3 2400MHz 16GB
HyperX Fury SSD 240GB 2,5"

In a Silverstone SST-GD09B with a stock 120mm fan and a Noctua NF-F12 PWM 120mm in addition.

I went for the 7800 because of it supposedly being only marginally slower than the 7850, but generates less heat.
The 2400Mhz memory was chosen because it should help out the Kaveri APU well to my understanding.
Everything runs beautifully, but I am very annoyed by the memory not being possible to run at full speed.

I've tried everything I can think of and suggestions I've found, including:

* Setting the speed manually in BIOS.
* Using XMP, in fact it has had trouble running the XMP at 2133MHz as well.
* Setting timers manually to factory settings
* Upping DRAM voltage 0.5 to the maximum 1.7v
* Setting NB from auto to 1600 which is maximum
* Playing around with timers a bit, including 15-15-15-x-x
* Probably a lot more I can't think of now

The results are usually one of the following:

* Error screen as Windows starts to load, followed by reboot and Windows asking if I need to recover
* Reboot with MB telling me overclock failed and lets me go to BIOS
* Semi brick where I need to reset CMOS

I am not after massive overclocking here, just a nice fast and stable HTPC that gives me what i paid for.

Thank you so much in advance!
post #2 of 9
Could just be too much for the IMC, especially using all four ram sockets. Try two sockets (dual channel) and see if you can get 2133 stable. If you can, shoot for 2400.

I'm pretty sure the 7800 runs 1866 (4 dimms) and 2133 (2 dimms) so that could be why you can't run them at rated speed. Although, the ram could be faulty. Do you have another system that can run the ram at rated speed to test the ram itself?
    
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro GTX 760 2GB 2x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock intel 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 630w Rosewill 
CaseMouseMouse PadAudio
Generic cheap ass case Dynex, lol Generic cheapy Sony wireless headphones.  
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CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro GTX 760 2GB 2x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock intel 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 630w Rosewill 
CaseMouseMouse PadAudio
Generic cheap ass case Dynex, lol Generic cheapy Sony wireless headphones.  
  hide details  
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post #3 of 9
Thread Starter 
Thanks for your reply!

I'm not using four sockets. It's 2 8GB sticks in dual channel.

I have another setup with a P8Z77-V PRO. The problem is that neither of the two motherboards seemingly out and out support 2400MHz. They both list it as supported when overclocked, albeit the P8Z77-V PRO also states support for 2600MHz, so it could handle it better. I guess I would have to set the timings manually and go into uncertain territory there as well to test, so I'm not sure that would help. The RAM seems to work fine at lower speeds. I am now testing it at 2197MHz according to CPU-Z, after setting it to 2133MHz with XMP in BIOS.

From ASUS:
The V-PRO: 4 x DIMM, Max. 32GB, DDR3 2600(O.C.)/2400(O.C.)/2200(O.C.)/2133(O.C.)/2000(O.C.)/1866(O.C.)/1800(O.C.)/1600/1333 MHz Non-ECC, Un-buffered Memory
The Plus: 4 x DIMM, Max. 64GB, DDR3 2400(O.C.)/2250(O.C.)/2200(O.C.)/2133/1866/1600/1333 MHz Non-ECC, Un-buffered Memory

I think it should be able to work, but I haven't got the bigger picture kind of knowledge of this yet, so I'm sure I'm missing out on something. Maybe a combination of things.

On a side note: I have ASUS AI Suite III installed, (I have tried without it as well) and it allows me to adjust the CPU/NB load line, but it seems to reset after reboot. Any thoughts?

Thanks!
post #4 of 9
Oh okay, I figured it was a 4x4 for some reason tongue.gif

I'm pretty sure X.M.P will set the voltage for you, but I would make sure it's set manually. If at all possible, I would skip X.M.P all together and set timings / voltage manually and see if that works. In the BIOS not AI Suite.

A quick search shows the timings should be 11-13-14-32 at 2T with 1.65v. Just leave all the other timings at default or auto.
    
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro GTX 760 2GB 2x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock intel 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 630w Rosewill 
CaseMouseMouse PadAudio
Generic cheap ass case Dynex, lol Generic cheapy Sony wireless headphones.  
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro GTX 760 2GB 2x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock intel 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 630w Rosewill 
CaseMouseMouse PadAudio
Generic cheap ass case Dynex, lol Generic cheapy Sony wireless headphones.  
  hide details  
Reply
post #5 of 9
Thread Starter 
Thanks again for replying. I didn't get notified before now for some reason.

XMP, or DOCP as it's called with AMD does set timings and voltage, but not correctly. I have set the correct timings based on the SPD readout from CPU-Z and the voltage incrementally from 1.6 to 1.7, but it won't boot and run stable at 1.66 or higher. I can't specifically set the DRAM frequency to 2400MHz, anything over 2166MHz wont boot, and makes the screen go blank forcing a PSU disconnect for a while if I'm lucky or having to jump the CMOS. I have also tried loosening the timings, and gotten semi stable at 2166MHz. Four instances of a memory test I can't recall the name of now for 1,5 hours didn't provoke any errors, but it locked up eventually while only running Spotify.

At the end of the day though, I believe your suggestion is correct and the problem is the IMC. I was weighing pros versus cons between the 7800 and the 7850k before ordering, and decided to go with the 7800 as the performance supposedly was just marginally lower but the TDP much better, which fits my HTPC setup nicely. I see now that that was a mistake as the IMC on the 7800 is much more fragile than its big brother. The crashes seem more like they are CPU-related, but that's just a guess.

It really bugs me that I'm not able to fix this, but I guess if the hardware can't take it there's not much more to do. I would like to get that confirmed or refuted though.
post #6 of 9
Quote:
Originally Posted by pronin View Post

Hello everyone!

I've been lurking for a while and reading a lot, and here's my first post.

I hope this isn't considered just another thread on a common problem, but I just cant find the answer after searching everywhere and was hoping you guys could help me.

I have recently built a HTPC with the following specs:

ASUS A88X-Plus, Socket-FM2+
AMD A10-7800
Cooler Master V550S, 550W PSU
HyperX Savage DDR3 2400MHz 16GB
HyperX Fury SSD 240GB 2,5"

In a Silverstone SST-GD09B with a stock 120mm fan and a Noctua NF-F12 PWM 120mm in addition.

I went for the 7800 because of it supposedly being only marginally slower than the 7850, but generates less heat.
The 2400Mhz memory was chosen because it should help out the Kaveri APU well to my understanding.
Everything runs beautifully, but I am very annoyed by the memory not being possible to run at full speed.

I've tried everything I can think of and suggestions I've found, including:

* Setting the speed manually in BIOS.
* Using XMP, in fact it has had trouble running the XMP at 2133MHz as well.
* Setting timers manually to factory settings
* Upping DRAM voltage 0.5 to the maximum 1.7v
* Setting NB from auto to 1600 which is maximum
* Playing around with timers a bit, including 15-15-15-x-x
* Probably a lot more I can't think of now

The results are usually one of the following:

* Error screen as Windows starts to load, followed by reboot and Windows asking if I need to recover
* Reboot with MB telling me overclock failed and lets me go to BIOS
* Semi brick where I need to reset CMOS

I am not after massive overclocking here, just a nice fast and stable HTPC that gives me what i paid for.

Thank you so much in advance!
post #7 of 9
Quote:
Originally Posted by Essential1one View Post

Download CPUZ and check the numbers and write them down, then hit BIOS and set SDRAM to manual and compare them and input them manually, sometimes the xmp don't match to CPUZ.
post #8 of 9
Quote:
Originally Posted by Essential1one View Post

I have the same Mobo, ASUS A88X GAMER, its rated 2400mhz on ram but won't go past 2133, I'm using 16gb 4x4gb HYPERX FURY, 7870k, 120gb HYPERX FURY SSD, HYPER 212 EVO With corsairs sp120 in push pull mode, 2x af120 1 venting other pulling and x2 af120 in front pulling, 2gb gtx750ti storm x oc, yet I av same problem with ram as you, PSU 550w, its the board I'm sure, try G Skills Ripjaws X ram 1866 they work in anything and overclocking like a dream.
post #9 of 9
Quote:
Originally Posted by pronin View Post

Hello everyone!

I've been lurking for a while and reading a lot, and here's my first post.

I hope this isn't considered just another thread on a common problem, but I just cant find the answer after searching everywhere and was hoping you guys could help me.

I have recently built a HTPC with the following specs:

ASUS A88X-Plus, Socket-FM2+
AMD A10-7800
Cooler Master V550S, 550W PSU
HyperX Savage DDR3 2400MHz 16GB
HyperX Fury SSD 240GB 2,5"

In a Silverstone SST-GD09B with a stock 120mm fan and a Noctua NF-F12 PWM 120mm in addition.

I went for the 7800 because of it supposedly being only marginally slower than the 7850, but generates less heat.
The 2400Mhz memory was chosen because it should help out the Kaveri APU well to my understanding.
Everything runs beautifully, but I am very annoyed by the memory not being possible to run at full speed.

I've tried everything I can think of and suggestions I've found, including:

* Setting the speed manually in BIOS.
* Using XMP, in fact it has had trouble running the XMP at 2133MHz as well.
* Setting timers manually to factory settings
* Upping DRAM voltage 0.5 to the maximum 1.7v
* Setting NB from auto to 1600 which is maximum
* Playing around with timers a bit, including 15-15-15-x-x
* Probably a lot more I can't think of now


The results are usually one of the following:

* Error screen as Windows starts to load, followed by reboot and Windows asking if I need to recover
* Reboot with MB telling me overclock failed and lets me go to BIOS
* Semi brick where I need to reset CMOS

I am not after massive overclocking here, just a nice fast and stable HTPC that gives me what i paid for.

Thank you so much in advance!

 

You're on the right track with troubleshooting to get our Savage DDR3 to stabilize. Let's keep in mind when we start overclocking beyond the JEDEC standards of 2133MHz for DDR3 you're basically tapping into the silicon lottery. Not every configuration will play nicely since your CPU, Motherboard, BIOS, BIOS settings, and ram will be an important factor when overclocking your memory to 2400MHz.

 

I see 2133MHz is still giving you issues also. Have you tried to update your BIOS? Is it possible for you to exchange or RMA the memory with us? It's worth a try if you like. :thumb:

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