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Comment: Re: Low write endurance? (Score 1) 64

by anethema (#47709123) Attached to: AMD Launches Radeon R7 Series Solid State Drives With OCZ

Sorry wrote it wrong but had it right in my calcs. I meant 30gb/day for 4 years.

It is 30 GB / day for 4 years which works out to 43 TB. Hopefully that makes it a bit more clear.

The point isn't that you may or may not use that much, its that their talking point is high endurance, and it actually has very low endurance compared to other consumer SSD lines.

Comment: Low write endurance? (Score 4, Insightful) 64

by anethema (#47704057) Attached to: AMD Launches Radeon R7 Series Solid State Drives With OCZ

Their claim is they are focusing on reliability and write endurance but it looks like they have some of the lowest endurance in the industry.

Even the drive it is supposed to be a bit of a clone from is rated much higher.

AMD R7: 4GB for 4 years = 43TB (Odd that they don't say this is dependent on drive size, which it would be.
OCZ Vector 150: 50GB for 5 years = 91 TB (Also not scaled for drive size)
Samsung 840: 1000 cycles. In their smallest drive this would be around 120 TB. Samsung is using lower endurance TLC here so this is even more odd.
Intel 730: 70TB over their 5 year warranty is 127 TB Highest of them all for MLC.

Now in real life, the AMD and OCZ drives may go much further before they fail, but you have to go off of their ratings for comparisons or all hell breaks loose (Tests have shown the Samsung drives lasting over 3000 cycles before beginning to reallocate sectors). Especially for the larger drives (A 240GB drive should have double the write endurance of a 120GB drive).

So yeah I find it odd that endurance is one of their talking points when they have by far the lowest endurance of any of the common drives out there, including the supposedly very similar Vector 150.

Comment: Re:all I'd need there is a sports iPod (Score 1) 427

by anethema (#47323967) Attached to: Ask Slashdot: What Would It Take For You To Buy a Smartwatch?

Ya my current watch (Casio pathfinder http://i219.photobucket.com/al... ) is already pretty smart as far as watches go (has altimiter, barometer, compass) and half the face is a solar panel. I've not had to change a battery since I got it, and expect I wont for a long long long time.

Be nice if a smart watch could be rugged without being the size of a phone, and have solar or some kind of decent battery life. A month even would be nice.

Comment: Unlocked iPhone 5s does it all (Score 1) 259

by anethema (#47157361) Attached to: Ask Slashdot: Do 4G World Phones Exist?

O2 and Vodaphone appear to use LTE band 20 (SOURCE: http://en.wikipedia.org/wiki/L...) AT&T and Canadian carriers generally seem to use bands 4 and 17 (same source).

The iPhone 5s does all of those and more. Model A1533 (GSM)*: UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 1, 2, 3, 4, 5, 8, 13, 17, 19, 20, 25)

  (Source: https://www.apple.com/iphone-5... )

I may be missing something but just buying an unlocked iPhone 5S from apple seems to give you all the LTE, HSPA, etc networks you could use in the UK and USA/Canada.

Comment: Apple Maps (Score 1) 198

by anethema (#46379361) Attached to: Apple To Unveil Its 'iOS In the Car' Project Next Week

"Drivers will be able to use Apple Maps as in-car navigation"

Not sure how that compares to most in-car navigation, but Apple maps is still a pile of garbage. They maps are much harder to see than googles, the POI database is terrible, the routing is unusable, at least in small-town Canada.

Be interesting to see what they come up with but I sure hope it has an App store to switch out the maps.

Comment: Re:Gravity wells and other distance issues (Score 1) 330

by anethema (#46321173) Attached to: Japanese Firm Proposes Microwave-Linked Solar Plant On the Moon

Actually you are understating the difficulty of transmitting that power.

There are several big problems. One is real world rectennas are not that efficient. The best best lab condition ones with lower power are 90% but high power ones are quite a bit less, sometimes up to 75 percent or so.

The other massive loss is transmission loss. The basic formula is 32.45 + 20log(d) + 20log(f). Using the 1.32 TW estimate in this post: http://science.slashdot.org/co... and a rough 24ghz given in this page http://www.propagation.gatech.... we would have around 231 db. Considering you are starting with 121 dBW of power, you are left with -110dBW of power on earth not accounting for antenna gains.

Since a watt is 0dBW, we need 55db of dish gain on either side to get 1 watt and a gain of 115 to get the input power generation. At 24 GHz this is a 3 KILOMETER dish on either end. The largest parabolic on earth now is 0.3 km, so ten times that. Plus it would have to always point at the moon (how? No idea).

Plus You would lose your 50% or more since obviously the whole equator isn't facing the sun. Then the 50-70 from your rectenna loses.

I imagine a bunch of other stuff from other losses I havent taken into account (Convert to AC, line loss, whatever else) and I cant imagine this being feasable.

Comment: Re:There are several good indie titles (Score 1) 669

by anethema (#46285629) Attached to: Ask Slashdot: What Games Are You Playing?

I actually found its not really like Cod at all.

There are similarities, like there would with any shooter. But there is parkour like running around (Like Assassins creed, but first person), jetpacks (due two these two, you have to think very vertically, or get killed very often), cloaks, "burn cards" which grant cool abilities, plus the obvious very large titans running around.

Comment: Re:Beware the CSI effect. (Score 1) 93

by anethema (#45926957) Attached to: First Recorded Observation of Freshwater Fish Preying On Birds In Flight

Yeah I really enjoyed the behind the scenes stuff of the BBC Planet earth showing the sharks catching the seals.

They aren't sure where/when/if it is going to happen, so catching the shots was tough.

They had a cool high speed camera that was always recording, and when they hit the button to get their slow-mo footage, the video camera recorded 2 seconds BEFORE and 2 after they pressed it, otherwise they would never have been able to get the whole event.

Pretty interesting.

Mystics always hope that science will some day overtake them. -- Booth Tarkington

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