cpt_howdy (OP)
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February 14, 2012, 01:03:41 AM
Last edit: February 14, 2012, 10:12:04 AM by cpt_howdy |
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[EDIT: Should mention this work was done in £££ not $$$ (or BTC  )] I've started doing a bit of small-time mining recently (~1.5GH/s) and I wanted to do some estimation of real profits, taking into account the capital cost of the mining hardware. After a bit of trawling, was amazed that I couldn't find a simple graph of GPU depreciation, so I made one. I'm not claiming this is comprehensive - I only looked at prices for mid-range ATI GPUs, because I thought the very high-end cards might follow a different price curve, and the very low-end cards are just hard to find prices for. I basically looked for a few different cost points in the life cycle for the ATI 3000-6000 series - e.g. (i) the launch price, (ii) a subsequent price drop announcement, and then (iii) a used-price on eBay. The 'cost half-life' is about 550 days, or 18 months.   |
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Every time a block is mined, a certain amount of BTC (called the
subsidy) is created out of thin air and given to the miner. The
subsidy halves every four years and will reach 0 in about 130 years.
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SgtSpike
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February 14, 2012, 01:57:36 AM |
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Interesting...
I'd be curious to see the 5870 on there as well, since it's one of the more highly sought-after cards out there.
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Mousepotato
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February 14, 2012, 06:16:46 AM |
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Why is the 5850 on there twice? I'm curious to see where the 5970 would place.
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Mousepotato
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DeathAndTaxes
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Gerald Davis
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February 14, 2012, 06:28:22 AM |
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Nice. Add in 5870 and 5970 I would imagine they will be outliers (I wish they weren't  ). |
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hongus
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Adoption Blockchain e-Commerce to World
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February 14, 2012, 06:54:28 AM |
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Why is the 5850 on there twice? I'm curious to see where the 5970 would place.
The 5770 is there twice too. It's comparing the value of ~200 days after release and ~800 days after release. At least that's what I think. |
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cpt_howdy (OP)
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February 14, 2012, 10:06:10 AM |
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Why is the 5850 on there twice? I'm curious to see where the 5970 would place.
Yep - there are actually 2-3 points for each card. There's the launch price, which appears at [0,100%] for all cards, then I generally found a mid-point price from a forum or archived news story, then a 3rd data point generally came from eBay, as beyond a certain date, it's harder to get hold of new stock. (and even when you can they're at unrealistically high prices) |
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cpt_howdy (OP)
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February 14, 2012, 10:17:37 AM |
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Im suprised the 5770 is doing so well
Well, you don't get much MHash out of a 5770, but I've found it's a pretty awesome combination of MH/J and MH/£ - I picked up 2 for £50 each, and I'm running them at 1V@860,300 for a power draw of 78W and rate of 197MH/s. That's 2.53 MH/J and 4 MH/£. |
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Brunic
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February 14, 2012, 03:38:51 PM |
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14 posts and you come post something THIS useful? You get my "Newcomer of the month" award.  It's an interesting topic to research. I suppose there could also be a correlation between the drop in value and the release of a new generation of cards. Do you have any dates? *EDIT* Ok, I didn't saw your excel chart. The data is limited but hey, it's still a good start. |
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cpt_howdy (OP)
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February 14, 2012, 04:00:07 PM |
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14 posts and you come post something THIS useful? You get my "Newcomer of the month" award. It's an interesting topic to research. I suppose there could also be a correlation between the drop in value and the release of a new generation of cards. Do you have any dates? *EDIT* Ok, I didn't saw your excel chart. The data is limited but hey, it's still a good start. Thanks! - I've been lurking for a few weeks, but glad to post something people might find useful. I'm really only mining to support the network, and because I believe bitcoin is a fundamentally good thing; UK electricity prices really only allow a very slim profit margin for miners (we're talking 10% here). I know I didn't collect a whole lot of data, but I don't have the time to do something more all-encompassing (I'm supposed to be working right now actually ). I think most people already know that products in the sort of bracket that GPUs inhabit (novel technology) follow an exponential curve with their depreciation - I just wanted to get a rough idea of the time constant. |
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MysteryMiner
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Show middle finger to system and then destroy it!
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February 14, 2012, 06:02:29 PM |
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HD3850 does not support GPU mining..
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PatrickHarnett
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February 14, 2012, 06:29:11 PM |
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HD3850 does not support GPU mining..
Maybe not, but it is a good reference point on the graph. It supports double precision and up until recently would have been usable at Milkyway@home. I haven't owned any HD38xx cards, but had a 2600 for a while (until it died). The 5970 points would be very interesting, and even the 4890x2's OP: thanks for the graph  |
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cpt_howdy (OP)
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February 14, 2012, 07:16:44 PM |
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HD3850 does not support GPU mining..
True, but it does have a GPU, and it does depreciate, so it's valid to put it on the graph Name me a card released 1500 days ago that does support GPU mining... |
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