My median contribution being 0.2 BTC, that would require on the order of 1000 contributors…
Although I did have one contribution at 25x the median…
Who’s getting 28 sol / s with CPU? Can you link this?
Revised benchmark results with no CPU or system memory overclocking – previous benchmark results were from an overclocked system.
CPU: Intel Core i7-4770K (running @ 3.50 GHz, 4 threads)
Memory: DDR3 (running @ 1600 MHz)
Benchmark duration: 72 Hours
Solutions per second (AVX2):
24.341 (closed source)
21.872 (open source – xenoncat)
Solutions per nonce iteration:
1.88
The benchmark was ran on two identical systems; one for each implementation. Block headers and nonce generation were deterministic.
For now, closed source is only 11% faster.
FYI, xenoncat’s AVX implementation – 22 sols/s AMD FX-8350, 8 threads, no overclocking, duration 24 hours.
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Our web sales are now live with a very small amount of hashrate. You can place an order at https://cloud.toom.im/order. We currently only have 8 H/s up for sale, but we’ll add more once we’re sure the system works.
We plan on adding some hashrate for sale to the website about 3 times a day, with about 10% of our available hashrate added each day. If our capacity hasn’t sold in ~8 hours, we’ll reduce our prices. If our capacity sold out quickly, we will increase our prices.
1 Like
I just purchased 8h / s
“I am a resident of Washington state” checked was wrong.
I am not resident of washington state …;;;;;;;;;;;;;;;;;
We’ll try to fix it once the transaction confirms. Thanks for helping us test the form.
Everyone else: we are now (temporarily) sold out. (The “Place order” button will be greyed out and the Order Size field will be red when we don’t have enough capacity on sale for your order. We’ll add a more specific message to that soon.)
I put another 10 H/s up.
Additional purchases are not available?
I would like to buy some hashing from you guys, so my power can be split in 3 - Gen & ZP included.
In case one of the facilities gets burned down, decides not to deliver or can’t deliver for whatever reason… (Old saying: something about eggs and baskets…)
This pricing makes it hard though. Waiting for a 33% decrease in price… Followed by 3 more doubles in hashrate.
will the former auction buyers will get the same price as https://cloud.toom.im/order
xenoncat’s AVX implementation – 22 sols/s AMD FX-8350, 8 threads, no overclocking, duration 24 hours.
Seems to me pretty fast for a CPU that cost in my country only 160 $. This could be better investment than GPUs…
1 Like
@nobody this thread 5 days back.
Thank You for information and clarification. Anyway the results are awesome comparing to GPU! Thanks again, the main idea of Zcash can be achieved 
!
I added another 20 H/s to our order form.
@interestree Multiple orders from the same customer is a feature that we have not yet added to our website. We should have it soon. We’re still beta-testing.
@eastwind_ja The auction purchases have already been made. The terms of the contract have been determined. I might decide to unilaterally go back and modify the contract in your favor, or I might not. I have not yet decided. The whole idea of retroactive price changes makes me pretty uncomfortable, though. I don’t think it’s generally a good model for how to run a business.
Edit: And the 20 H/s is gone, before I even finished writing this message. Adding another 20 H/s in 20 seconds.
I will put up 100 H/s more at 6:00am PDT, about 2 hours 2 minutes from now. As we sold out very quickly on the last few rounds, we will be increasing the price about 10% for the next round.
Are You sure that You can compete against millions of CPU’s which are connected to the pool and which performance will be only 1.5 times (at max) less than a powerful GPU has?
nobody, could you please let us know how much of your runtime is spent on generating blake2b hashes (just generation, not storing in global memory) ?
from what i gather, xenoncat spends roughly 20% of runtime hashing.
I’m curious how yours compares…
CPU: Intel Core i7-4770K (running @ 3.50 GHz, 4 threads)
And 64mbit of cache! For Zerocash’s equihash parameters the sortings are done on 40mbit chunks, which fit entirely within the monster cache on that chip.
2 Likes
Another 100 H/s will be available for sale at 12:00pm PDT, 1 hour from now.