ZaReason's Valta X79

We've Secretly Replaced Our Benchmarking Tools with Cryptocurrency!

It's easy to look up benchmarks on specific CPUs and GPUs. Because ZaReason sent me this unit after reading my article on cryptocurrency, it seems only fair to benchmark it using that method. Before I delve into hashrates and profits/losses, however, let me define a few terms for those not familiar with cryptocurrencies:

  • Mining: cryptocurrency is something I've written about in past months, but basically, it's a form of virtual currency. That currency is created and secured by a large network of folks donating processing power to cryptographically verify transactions. In return for that donated processing power (aka "mining"), virtual coinage is produced and distributed to the miners. This both introduces the currency fairly into the economy and gives people an incentive for donating their processing power.

  • Hashrate: this is the speed at which miners can verify transactions, or more precisely, the speed at which they can solve the math problems that verify transactions. The faster the processor, the higher the hashrate.

  • Bitcoin: the most widely accepted and traded cryptocurrency. The algorithm used to verify transactions is SHA256 and is most efficiently mined with GPUs, specifically AMD/ATI-brand GPUs.

  • Litecoin: created to be the silver to Bitcoin's gold, Litecoin uses the Scrypt algorithm with the intent of being more efficient to mine with a CPU. Scrypt is more memory-intensive than SHA256, so CPUs have an easier time verifying the transactions.

Another important thing to understand about cryptocurrency is that the speculation market for individual currencies is extremely volatile. Bitcoins have traded for as little as fractions of a penny each, all the way to more than $30 each. Litecoins peaked at about a nickel, and at the time of this writing, they are selling for about a half-cent each. Cryptocurrencies are fun to play with, but I certainly don't recommend investing more than you can afford to lose.

Torture Testing, for Profit!

Let me start with the graphics card. First, the AMD 6970 is an incredibly fast gaming card. I know that's not what I'm reviewing, but it's worth noting I couldn't get this thing to drop a frame no matter how hard I tried.

When it comes to Bitcoin mining, the 6970 is no slouch either. Running at stock clockrates and voltages, I was able to mine Bitcoins at around 375 million hashes per second, or MH/s. Using my Kill-A-Watt meter, I measured the difference in wattage at about 225 watts versus the idle GPU. Using the profitability calculator at, given the current Bitcoin difficulty and trading price, it turns out I can mine about $1.10 worth of Bitcoins every day. Keep in mind, however, that my electricity costs about $0.11 per kilowatt hour, so while I might make $1.10 in Bitcoins, it costs me $0.59 in electricity. At current rates (end of March 2012), that means this computer will make about $0.51 per day in profits, along with quite a bit of noise and heat.

The second-generation i7 processor, with its new AVX instruction set, is the fastest Litecoin miner I've ever seen. Running all six cores (12 with hyperthreading), the Core i7-3930K uses right around 200 watts according to my Kill-A-Watt. That's actually a little lower than some benchmarks I've seen, but nonetheless, it's what I recorded. The impressive part is that the CPU was able to sustain about 72 thousand hashes per second (KH/s), which is more than twice as fast as my AMD 6-core CPU can muster. Using the same profitability calculator from, this CPU can mine around 42 Litecoins a day. Since the price of Litecoins is so low, that equates to only around $0.23. Unfortunately, at 200 watts, it costs around $0.53 per day to mine, so if I were to mine Litecoins today, I'd lose around $0.30 a day.

That is where the speculation comes in. Just a few short weeks ago, Litecoins were selling for 3–4 cents each, which means it was profitable to mine. Depending on your cost for electricity, perhaps it never will be profitable to mine Bitcoins or Litecoins. Again, I stress not to spend more money than you can afford to lose. Still, if you're into cryptocurrencies, it's a neat way to stress-test a computer!


The Valta X79 is a screaming-fast computer. To be honest, if I were going to build a powerhouse computer from scratch, it's the exact type of system I would build. I think that's what I like best about it. ZaReason has taken the essence of building your own computer, using standard parts, and done the testing to make sure everything works well together. Then ZaReason assembles it, configures it and, most important, supports it. If you've ever wanted to build a custom system, but wished you didn't have to give up a warranty and tech support, you'll love this Linux beast from ZaReason. The price for the unit as reviewed is $2,396. To configure and price your own custom Valta X79, head over to





Market Price and Profit Calculator:


Shawn is Associate Editor here at Linux Journal, and has been around Linux since the beginning. He has a passion for open source, and he loves to teach. He also drinks too much coffee, which often shows in his writing.


Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

extremely interesting review!

rbthorne's picture

About 6 months ago, in India, I read in an Indian newspaper that Cuba, India, and at least a few South American countries were switching their public schools' computer operating systems to Linux, as I recall the Ubuntu distribution. This is best from the standpoints of speed, reliability, affordability, learning "real computers", and one's own security of confidential information in a situation where the Microsoft OS "vulnerabilities" have made your computer, and confidential information, an open book to people who have no right to be prying into everything that's yours and should be yours alone. Personally, I believe that CNN (Cee No News) is a front for powers that wish us to believe things that are simply not true. It's my opinion, from knowing someone who worked at AT&T Bell Labs, Murray Hill, New Jersey and saw many things, that Microsoft and Windows were more the creation of Bell Labs scientists, with Bill Gates as the "front man" (like Ted Turner with CNN) by powers who really want access to your personal information, political inclinations, personal plans, etc., and the ability to "lock up-freeze up" and to "make disappear" what you were working on for hours, on your Windows computer, when you were just ready to post it. I still don't know how they seem to "correctly anticipate" this timing when it's almost certainly done by software, and there are not enough people doing "Humint" (human intelligence-spying) to get this done properly. I've read that China is responsible for interfering with, and monitoring, a lot of what goes on with computers in U.S. households, corporations, etc. I also believe that the "antitrust lawsuit" against Microsoft was a farce, and a diversion, to divert our thinking away from this reality.

"First they ignore you, then they laugh at you, then they fight you, then you win."

"There have been tyrants, and murderers, and for a time they can seem invincible. But in the end they always fall. Think of it. Always." -- Mahatma Gandhi

"You shall

It is quite useful and

Kratom Thai's picture

It is quite useful and informative review indeed.

GPU mining likely over in a few monts

Anonymous's picture

If you buy a GPU for Bitcoin mining, know that in a few months the reward mechanism will be dropping by half and the mining proceeds will likely drop below the cost of electricity as a result.

So hopefully you are buying the GPU for other purposes as well and won't be surprised when it never pays for itself from mining.

The scrypt-based mining will probably get a huge number of mining refugees from (sha256-based) Bitcoin so that likely won't be a good backup plan either.

Additionally, the FPGAs available today are much more efficient on power for mining, but even those will be obsoleted by the ASIC hardware that is expected in a matter of months as well.

Parts good, but in my experience, assembled poorly

Anonymous's picture

Where I work we use Linux quite extensively and we gave ZaReason a try. The parts are great, price is quite good ...however, they were assembled quite poorly. Weird stuff too. Stuff plugged into the mobo backwards. We had to send 3 back of the 6 or 7 we ordered [ I'm not even counting the one's we sent into production after fixing the stuff plugged in wrong ]. This is a promising company but someone seriously needs to bump up the level of quality control in the assembly room. Also, the cases are chintzy and flimsy on the ones we ordered.

Operating System

Angus Williams's picture

I am curious as to why they installed, and or are using Kubuntu 11.10 as oppose to 12.04 LTS

From the mag

Shawn Powers's picture

This review was originally in the magazine, and at the time of the review, 12.04 was still in beta.

Shawn is Associate Editor here at Linux Journal, and has been around Linux since the beginning. He has a passion for open source, and he loves to teach. He also drinks too much coffee, which often shows in his writing.


Mike D.'s picture

You get hardware with a Linux OS and ask for an ATI graphics card? Don't you consider that a bit weird? If you want gfx power you choose a Nvidia card and use the proprietary driver!


Shawn Powers's picture

I specifically wanted to test cryptocurrency mining on the machine. ATI cards are orders of magnitude better at mining bitcoins than Nvidia cards.

Shawn is Associate Editor here at Linux Journal, and has been around Linux since the beginning. He has a passion for open source, and he loves to teach. He also drinks too much coffee, which often shows in his writing.