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Author Topic: WHere are the 7800's?????  (Read 2490 times)
d.james
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October 17, 2011, 06:20:30 PM
 #21

Ya I'm also waiting for the Radeon HD7999 quad core, with 800mh per core, and of course, crossfire 4 of them.

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TurboK
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October 19, 2011, 05:23:12 AM
 #22

7900 are based on CGN new thing at 28nm and will be like Nvidia so not good for mining.

We don't know that. They still have the sheer shader count that makes them more effective than the 5870/6970 in mining.

That is of course unless the new shader architecture does not incur significant performance loss in password hashing. Given how the bitcoin fiasco pretty much cleared out the 5k/6k generation of cards ultra fast, they'd have to be stupid to not make their new arch mining-friendly. And since the shaders are now far more powerful each, for all we know they may end up with higher mhash than a 5k/6k with equal shader count.

We will see in a few months.

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catfish
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October 19, 2011, 08:34:46 AM
 #23

How do you figure that? How many hashes per 5870 and what price are you getting them at?

Example:
$280 5870, 460MH/s = 1.64 MH/$
$400 5970, 700MH/s = 1.75 MH/$

Unless you are finding 5870 at less than $250 per card new I don't see how they are best hasher per $$$.
Are far as the 5970s being "silly money" unless you are only buying one card, 2x 5870 cost more than a 5970.

5970 makes deployment simpler and has higher electrical efficiency.  However keep buying those 5870s I don't want the price to go up on 5970s.

Trust me mate. Here in the UK we get foked over by the gov. The prices are insane here. 2x5870 much cheaper than a 5970. 400 USD for 5970 is MAGIC to us.
Not to mention the cost of electricity... anyway, when was the last time you saw a 5850 or 5870 on a UK website (new, not overclocked till the original owner smelled smoke and returned it under distance selling regulations Roll Eyes ) - let alone for sensible money?

Remember, manufacturers are *still* turning out new designs of cards using the 5830 cores - I spotted a load for sale on videocardshop.co.uk and picked some up, thinking they'd be the same 'Value' 5830 (made by Peak, with two protruding tall heatpipes, every one with snapped fan housing screws, though that didn't stop them working, and all with completely random overclocking potential from extreme to limited).

They weren't - they were new XFX units - a completely new design I hadn't seen before, no complete card shroud, just a spiral-heatpipe fan cooler and a passive heatsink on the VRMs. I haven't tried overclocking these in anger yet, but the one I've got up and running seems OK (around 5˚C hotter than the Peak twin-heatpipe shrouded cards, at 850/300 and around 275 MH/sec).

I presume that all the Cypress cards (5830, 5850, 5870) are effectively the same chip but graded according to defects, right? Or are they specifically designed differently? Seems odd that there's still a supply of *new* Cypress silicon into the market - there's obviously demand because the 5830 is pretty decent in terms of hash per watt in bitcoin mining, but if these new XFX designs aren't just using up surplus production, and AMD are still running Cypress chips on their fabs, then we may be waiting longer for the 78xx cards than expected.

IMO, I'd be happy with identical hashing performance but half the power consumption. In the UK, electricity is the main cost for heavy bitcoin mining...

...so I give in to the rhythm, the click click clack
I'm too wasted to fight back...


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m3sSh3aD
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October 19, 2011, 08:50:22 AM
 #24

How do you figure that? How many hashes per 5870 and what price are you getting them at?

Example:
$280 5870, 460MH/s = 1.64 MH/$
$400 5970, 700MH/s = 1.75 MH/$

Unless you are finding 5870 at less than $250 per card new I don't see how they are best hasher per $$$.
Are far as the 5970s being "silly money" unless you are only buying one card, 2x 5870 cost more than a 5970.

5970 makes deployment simpler and has higher electrical efficiency.  However keep buying those 5870s I don't want the price to go up on 5970s.

Trust me mate. Here in the UK we get foked over by the gov. The prices are insane here. 2x5870 much cheaper than a 5970. 400 USD for 5970 is MAGIC to us.
Not to mention the cost of electricity... anyway, when was the last time you saw a 5850 or 5870 on a UK website (new, not overclocked till the original owner smelled smoke and returned it under distance selling regulations Roll Eyes ) - let alone for sensible money?

Remember, manufacturers are *still* turning out new designs of cards using the 5830 cores - I spotted a load for sale on videocardshop.co.uk and picked some up, thinking they'd be the same 'Value' 5830 (made by Peak, with two protruding tall heatpipes, every one with snapped fan housing screws, though that didn't stop them working, and all with completely random overclocking potential from extreme to limited).

They weren't - they were new XFX units - a completely new design I hadn't seen before, no complete card shroud, just a spiral-heatpipe fan cooler and a passive heatsink on the VRMs. I haven't tried overclocking these in anger yet, but the one I've got up and running seems OK (around 5˚C hotter than the Peak twin-heatpipe shrouded cards, at 850/300 and around 275 MH/sec).

I presume that all the Cypress cards (5830, 5850, 5870) are effectively the same chip but graded according to defects, right? Or are they specifically designed differently? Seems odd that there's still a supply of *new* Cypress silicon into the market - there's obviously demand because the 5830 is pretty decent in terms of hash per watt in bitcoin mining, but if these new XFX designs aren't just using up surplus production, and AMD are still running Cypress chips on their fabs, then we may be waiting longer for the 78xx cards than expected.

IMO, I'd be happy with identical hashing performance but half the power consumption. In the UK, electricity is the main cost for heavy bitcoin mining...


They just ran out at OCUK of sapphire 5850's, which they sold from £100 inc VAT about 3 month ago to £160 inc VAT 2 months ago. I got loads of them and all do 1000/300 and use a shroud like XFX's on them. Unlike cheap and nasty XFX, sapphire released Trixx, An overclocking utility. I've had an XFX 5870 die on me cause of the cheap fans they use.

I agree now there hard to find, But OCUK have been pumping them out like theres no tomorrow haha. Your loss Smiley
catfish
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October 19, 2011, 08:58:11 AM
 #25

They just ran out at OCUK of sapphire 5850's, which they sold from £100 inc VAT about 3 month ago to £160 inc VAT 2 months ago. I got loads of them and all do 1000/300 and use a shroud like XFX's on them. Unlike cheap and nasty XFX, sapphire released Trixx, An overclocking utility. I've had an XFX 5870 die on me cause of the cheap fans they use.

I agree now there hard to find, But OCUK have been pumping them out like theres no tomorrow haha. Your loss Smiley
My loss? I'm not talking about three months ago mate, I bought those 5850 extremes from OCUK back then too - got 4 of them and they're running very well (not getting 1000/300 though - 975/300 seems to be my limit, but I don't tweak voltages).

I think I paid £120. Then they went up, then I started looking at 6950s, then they were gone. There seems a steady supply of 5830s though, at videocardshop.co.uk - but the quality of the cards seems somewhat suspect. Time will tell - I've had two cards from videocardshop fail on me (one XFX 5850 Black Edition - which was crap and couldn't overclock a damn - and one of the Peak Value 5830s).

I'm keeping an eye on OCUK for Asus DirectCU II 6950s now - they're awesome, well built, solid metal, unlockable shaders, and have the all-important overdrive upper limit raised so an easy 430 MH/sec is possible without serious BIOS tweakage.

The 5830s are still nice though since you can run four of them off a cheap 800W supply without stretching it. PSUs get expensive over 1000W and that's what you need for four 6950s when overclocked Sad

...so I give in to the rhythm, the click click clack
I'm too wasted to fight back...


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m3sSh3aD
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October 19, 2011, 10:03:50 AM
 #26

They just ran out at OCUK of sapphire 5850's, which they sold from £100 inc VAT about 3 month ago to £160 inc VAT 2 months ago. I got loads of them and all do 1000/300 and use a shroud like XFX's on them. Unlike cheap and nasty XFX, sapphire released Trixx, An overclocking utility. I've had an XFX 5870 die on me cause of the cheap fans they use.

I agree now there hard to find, But OCUK have been pumping them out like theres no tomorrow haha. Your loss Smiley
My loss? I'm not talking about three months ago mate, I bought those 5850 extremes from OCUK back then too - got 4 of them and they're running very well (not getting 1000/300 though - 975/300 seems to be my limit, but I don't tweak voltages).

I think I paid £120. Then they went up, then I started looking at 6950s, then they were gone. There seems a steady supply of 5830s though, at videocardshop.co.uk - but the quality of the cards seems somewhat suspect. Time will tell - I've had two cards from videocardshop fail on me (one XFX 5850 Black Edition - which was crap and couldn't overclock a damn - and one of the Peak Value 5830s).

I'm keeping an eye on OCUK for Asus DirectCU II 6950s now - they're awesome, well built, solid metal, unlockable shaders, and have the all-important overdrive upper limit raised so an easy 430 MH/sec is possible without serious BIOS tweakage.

The 5830s are still nice though since you can run four of them off a cheap 800W supply without stretching it. PSUs get expensive over 1000W and that's what you need for four 6950s when overclocked Sad

sorry, sometimes i come across blunt as hell haha Smiley

i got 1200W Antec PSU's now, there not cheap but you get better amps from them. 5850's are pulling 115 amps which my PSU's only do 98. Im hoping the new 7 series will help with this issue too. £200+ everytime isnt cheap at all for power Sad 2x 750/800's work and are cheaper but i like just having the 1 PSU per system of 4 cards. And its neater Smiley Corsair AX series are by far the best PSU on the market bar non. There single rail units and go upto 1200W which is an acheivement in itself, but still, 100amp max on the 12V rail.

My 5850's are set to 965/300 @ 1.93V all day/everyday now as temps are always below 75-80 and its ROCK SOLID! 6+ weeks and counting. Server performance dare i say Smiley Don't know if you remember but i was the one with the 1015/300 @ stock card and believe i was one of the first notice the 2 different revisions of the xtreme cards Smiley There still strong for me and the XFX's are dead! Cheap fans killed them. Getting replaced but im worried there going be replaced with XFX 6970's, which are going to be just as poor hardware, if not worse. XFX suck rotten eggs. Gigabyte mobo's too, Avoid like the plague as alot dont allow more than 3-4 cards to be put in. Had this issue with 3 of gigabytes boards. MSI all the way now. After 3-4 months i learnt alot about companies and there shortcuts Smiley
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