Testing Issues and a Statement from iBUYPOWER

I mentioned the problems that surfaced during shipment of the iBUYPOWER Erebus GT on the previous page (a minor coolant leak due to the reservoir cap not being completely fastened, and a loose lighting strep), but there were also issues with stability.

Speaking frankly if anecdotally, the idea of a desktop (especially a heavily overclocked desktop) that can actually enter and exit sleep mode properly is practically mythical in nature. I've never owned or serviced a desktop that could do it without locking up or getting stuck in a power cycle when I tried to wake it up. My experiences there are fraught. [Ed: I have a couple old Core 2 Quad systems that manage this feat, as well as a couple Bloomfield systems that can sleep and resume, but I do admit that the overclocks are relatively tame by comparison to the Erebus GT.] That said, when you buy a system from a vendor, be they large or small, you want the system to work perfectly.

During setup, I left the Erebus GT for a couple of hours and it idled to sleep on its own. Unfortunately it wouldn't wake up, and when powered off and then restarted it wouldn't POST. I had to clear CMOS to get the system to POST again, and then manually re-enter the overclocking settings. After that the system ran smoothly (though I disabled sleep in Windows), with just one hiccup where it locked up during PCMark 7. This isn't entirely unheard of; I have a notebook from a major vendor I'm reviewing right now that locked up during a run of PCMark 7, but like the Erebus GT the system ran smoothly before and since.

Acknowledging that there were problems with our review unit, though, we asked iBUYPOWER for a statement which is provided below:


We apologize for the issues you have had setting up the system. It is our number one priority to make sure that our customers’ systems function properly as expected when it arrives and throughout the product’s lifespan. Our customers obviously expect the same from the moment they hit the customize button to configure their system. That’s why every system we ship is tested to be fully functional under harsher conditions than they are typically ever used in. In addition, we put a lot of time into engineering safeguards and redundancies into our products, like our unique Erebus line, to prevent major mishaps and limit possible damage. For example, we use Koolance compression fittings, instead of much cheaper alternatives, to prevent coolant leaks and we use specially formulated non-conductive coolant, in case there is a leak.

Unfortunately, when you deal with massive customizability on a large scale, it is impossible to anticipate every situation. There are a lot of things that can happen after the system leaves our factory floor. That’s why we have policies in place to protect our customers, like a 30-day money-back guarantee with no restocking fee (for the worst-case scenarios). Obviously, before we get to that level, we always try to work out the problems with the system. Ultimately, what everyone wants is for the system to work.

Our technicians and customer service representatives are based right here in the USA, and are very experienced and have each worked with hundreds, possibly thousands of unique systems and customers. With customers who are more comfortable with technology, we will work with them to get the system running. For those who are not comfortable with tinkering, we will have the system shipped back to us for repair. Sometimes, the problem is simple, like a SATA cable that came loose in shipping, or an oddly misbehaving BIOS. Other times, fixes are more difficult, like physical damage due to the box being dropped by a shipping carrier. Either way, our representatives have the experience, the knowledge, and, most importantly, the authority necessary to remedy any issue that may arise.

Again, we apologize for the issues you have had setting up your system, and I am pleased to hear that you were able to get the system running with the assistance of one of our technicians. We want to assure you and your readers that we stand by our products, and will do anything necessary to ensure our products operate and perform at a level at or above expectations.


The 30-day money-back guarantee is a nice safety net, but there's certainly a concern with long-term stability with a hefty overclock. We had two minor issues that we experienced; one couldn't be reproduced in our limited and may have just been one of those random issues that sometimes crop up, but more likely is that the overclock might be just a bit too high or too close to the edge on one of the settings. I'd expect more problems to manifest over an extended period of time, and unfortunately evaluating long-term customer support for a product like this (e.g. over a year of use) is beyond the scope of what we can test.

The other problem (inability to resume from sleep) is unfortunately relatively common for significant overclocks. There's a simple workaround (don't put the computer to sleep and disable the sleep option in Windows), but it's not an elegant solution. The cause of such problems usually goes back to the motherboard and BIOS, but regardless it's a quirk you need to be willing to live with (or willing to troubleshoot) if you choose to purchase a heavily overclocked PC. Not every overclocked PC will experience this problem—not even PCs with the same components and same overclock—but often there's no real fix other than backing down on the overclock or disabling sleep mode. YMMV.

Build, Heat, and Power Consumption Conclusion: Worthy of Enthusiast Attention
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  • will54 - Saturday, March 17, 2012 - link

    Where did you find a GTX 570 for 210$? The ones on Newegg are around 300$ if I could find one for 210$ I would be less likely to wait for Kepler to build my rig.
  • rakunSA - Thursday, March 15, 2012 - link

    The sleep issue you were experiencing isn't an isolated incident. It affects the whole SB platform. People thought Z68 would correct this issue but apparently, Z68 boards are still affected.

    http://hardforum.com/showthread.php?t=1619794

    There hasn't really been an official fix. But it seems like it has to do with PLL overvoltage enabled or disabled.
  • Zap - Thursday, March 15, 2012 - link

    It is an issue, but can be worked around. All of the overclocked Sandy Bridge systems I have built (8-10?) can S3-sleep/resume just fine, with the exception of one using an Asus P8P67 Pro which on occasion (once a month?) doesn't resume and another using an ASRock board that was fixed with a BIOS update.
  • WeaselITB - Thursday, March 15, 2012 - link

    My ASUS ROG motherboard with an overclocked i5-2500k experiences this issue, too, if I try to resume from either keyboard or mouse input - it seems to hang while re-initializing the graphics. If I resume by pressing the power button on the tower, it comes up every time.

    Food for thought.

    -Weasel
  • zanon - Thursday, March 15, 2012 - link

    Thanks for the review, this looks like a very interesting piece of kit. I agree that the incredible overclock capability of the 7970 seems in fact to be one of its major virtues, so it's a bit too bad to not see that pushed a bit in an LC setup (I'd prefer that with a tamer CPU OC actually), but even so stuff like the attention to detail in tuning the CPU OC voltage is appreciated.

    One review-related thing I wondered about though was temp & noise. You have the normal Anand review charts showing idle/load power, but not the charts for temperatures & noise under idle & load. Per above, I understand that you're really busy with batches of stuff at once, but particularly with liquid cooling a big part of the value centers around temperature and noise, so it's helpful to be able to see exactly how it stacks up. Even so, thanks again!
  • Lazlo Panaflex - Thursday, March 15, 2012 - link

    I'm not versed in the nuiances of Watercooling setups. Was wondering what kind of maintenance is involved in maintaining a system like this? I suspect the coolant would have to be replaced completely by IBuypower at some point?
  • Lazlo Panaflex - Thursday, March 15, 2012 - link

    by IBuypower or the user at some point? need an edit button here!
  • rakunSA - Thursday, March 15, 2012 - link

    looks like a standard loop with a 360 rad. Since they're using dyed coolant, the tubing will stain. You're probably looking at a standard 1-4 flushes a year depending on OCD you are with it (there are some people who flush once every 2 years). Also gotta make sure the rad is clean (much like you would clean a normal heatsink).

    The coolant is typically some sort of mixture of distilled water, glycol, biocide, and colored dye. Most enthusiasts will just use distilled water, biocide or 99.999% silver and call it a day. Its the best performing setup (yes better than the proprietary coolants), and requires the least maintenance.
  • Lazlo Panaflex - Friday, March 16, 2012 - link

    Thanks :)
  • Sunburn74 - Thursday, March 15, 2012 - link

    Sleep issues with the k series sandybridge chips with high overclocks can often be remedied by turning off CPU PLL and running memory at stock settings with exactly 1.5V as the input vdimm. That being said, sometimes to cross 4.5ghz you need cpu PLL on so pick your poison.

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