For sale allows here?

airsquirrels · 2017-05-23, 16:39

I'm not sure if we generally allow for sales around here, so if this is an issue feel free to delete this post.

I am in the process of some hardware upgrades for efficiency sake, and unfortunately some of my Titan Blacks are getting replaced with newer less hungry cards. I have 7 air cooled stock Titan blacks and one regular Titan all in good working condition. I also have two Titan Zs. I'm asking $250 for the Titan Blacks and $200 for the Titan. I also have many water blocks available for these cards.

I still need to send my damaged cards to Laurv.

Mark Rose · 2017-05-23, 16:47

LaurV probably wants your working Titan.

LaurV · 2017-05-24, 14:38

Yeah, sure, who made the Blacks? Actually, I am not interested in the brand, the right question is if I can use the water cooling blocks which I have around, and which match the classic EVGA Tits, to cool the Black Tits with them. In matter of water blocks, I have a hydro-copper, two ekwb, and four heatkiller, all full-cover. As much as I know, they fit both the classic and black Titans. But the ways of lord are informal...

So, I am seriously thinking to take four of your Blacks. Then you can ship them together with the damaged cards. I pay the shipment too (I assume they are heavy, therefore not very cheap to send), if you do not pick the most expensive forwarder and skin me off... Or we share somehow... You can write on the box that they are all for repairing, especially if they do not look very new, in this case you will save me about 10% in import tax (albeit you never know, with the Thai customs...)

airsquirrels · 2017-05-25, 12:46

I believe all my cards are the EVGA variety. The Titan Blacks and Titan all look the same and the ones I have on blocks use the same blocks.

I will inventory and provide the sticker numbers/pictures of all the cards and blocks I have later today.

airsquirrels · 2017-05-25, 19:33

I keep receiving "Upload Failed" attempting to upload images...

VictordeHolland · 2017-05-26, 09:03

Quote:

Originally Posted by airsquirrels

I keep receiving "Upload Failed" attempting to upload images...

They're probably too big size for the forum ?

airsquirrels · 2017-05-26, 11:04

I seem to get a separate error when posting large images that lists the size limit, so I don't think it is that.

petrw1 · 2017-05-29, 05:02

Quote:

Originally Posted by airsquirrels

I'm not sure if we generally allow for sales around here, so if this is an issue feel free to delete this post.

I am in the process of some hardware upgrades for efficiency sake, and unfortunately some of my Titan Blacks are getting replaced with newer less hungry cards. I have 7 air cooled stock Titan blacks and one regular Titan all in good working condition. I also have two Titan Zs. I'm asking $250 for the Titan Blacks and $200 for the Titan. I also have many water blocks available for these cards.

I still need to send my damaged cards to Laurv.

What were you asking for each "Z"?
Were they producing about 700 TF GhzDays/Day as reported here?

http://www.mersenne.ca/mfaktc.php

LaurV · 2017-05-29, 05:23

Hey, nice to see you in business again Sid! (Or it is Andy?

)

I see you linked to the TF performance chart. Using Titans for TF is a waste of their abilities and your electricity

This is the link where you must look.

There is nothing beating a Titan Z at LL, except for a ~5000 bucks Tesla (and some new Pascals, still bloody expensive).

Now, the problem with "Z"s is that they are two GPUs on the same board. Therefore they work like two under-clocked classic Titans in SLI (or not). Under-clocked, to keep the heat and the consumption under control.

They DO produce the GHzDays as stated on James' site, they produce even more (it may be myself, because I watercool and overclock a bit, but for all Titans on James' site, the numbers seem to me much lower than reality). If you take the numbers shown for a Titan, multiply by two (because you have two on a Z) and multiply again with the underclocking factor (i.e. multiply by Z's clock and divide by T's clock) then you get exactly the GHz days of a Z. That is a bit more than shown in James' tables.

But they do not produce those numbers on a single exponent. That is, you can not LL a single exponent in about half of the time compared to a T classic. The Z's are still two discrete GPUs and still waste time exchanging data, no matter what magic interface they have between them. Therefore what you can do, you can take two exponents, and LL them in the same time on the Z, and get a time just a little bit longer than in a single T classic crunching a single exponent in the same range. And you get that time for only a bit more energy wasted (not double). With good cooling, you can stress them to get the performance of two Titans (not overclocked) at about 80% of the energy, or so.

This does not suit me, therefore I am not in the market for Z's. I am not looking for maximum output (that would be actually achieved with Xeons, I think), but for the shortest time to test a single exponent (actually, you saw my setup when you visited me this year, I am still working at it). For this, nothing beats a well cooled, slightly OC'ed, Titan classic, yet (Xeons and "multicore" CPUs included).

2017-05-23, 16:39	#1
airsquirrels "David" Jul 2015 Ohio 11·47 Posts	For sale allows here? I'm not sure if we generally allow for sales around here, so if this is an issue feel free to delete this post. I am in the process of some hardware upgrades for efficiency sake, and unfortunately some of my Titan Blacks are getting replaced with newer less hungry cards. I have 7 air cooled stock Titan blacks and one regular Titan all in good working condition. I also have two Titan Zs. I'm asking $250 for the Titan Blacks and $200 for the Titan. I also have many water blocks available for these cards. I still need to send my damaged cards to Laurv.

2017-05-24, 14:38	#3
LaurV Romulan Interpreter Jun 2011 Thailand 2²·3³·89 Posts	Yeah, sure, who made the Blacks? Actually, I am not interested in the brand, the right question is if I can use the water cooling blocks which I have around, and which match the classic EVGA Tits, to cool the Black Tits with them. In matter of water blocks, I have a hydro-copper, two ekwb, and four heatkiller, all full-cover. As much as I know, they fit both the classic and black Titans. But the ways of lord are informal... So, I am seriously thinking to take four of your Blacks. Then you can ship them together with the damaged cards. I pay the shipment too (I assume they are heavy, therefore not very cheap to send), if you do not pick the most expensive forwarder and skin me off... Or we share somehow... You can write on the box that they are all for repairing, especially if they do not look very new, in this case you will save me about 10% in import tax (albeit you never know, with the Thai customs...) Last fiddled with by LaurV on 2017-05-24 at 15:20

2017-05-26, 11:04	#7
airsquirrels "David" Jul 2015 Ohio 11·47 Posts	I seem to get a separate error when posting large images that lists the size limit, so I don't think it is that. Attached Thumbnails

2017-05-29, 05:23	#9
LaurV Romulan Interpreter Jun 2011 Thailand 2²·3³·89 Posts	Hey, nice to see you in business again Sid! (Or it is Andy? ) I see you linked to the TF performance chart. Using Titans for TF is a waste of their abilities and your electricity This is the link where you must look. There is nothing beating a Titan Z at LL, except for a ~5000 bucks Tesla (and some new Pascals, still bloody expensive). Now, the problem with "Z"s is that they are two GPUs on the same board. Therefore they work like two under-clocked classic Titans in SLI (or not). Under-clocked, to keep the heat and the consumption under control. They DO produce the GHzDays as stated on James' site, they produce even more (it may be myself, because I watercool and overclock a bit, but for all Titans on James' site, the numbers seem to me much lower than reality). If you take the numbers shown for a Titan, multiply by two (because you have two on a Z) and multiply again with the underclocking factor (i.e. multiply by Z's clock and divide by T's clock) then you get exactly the GHz days of a Z. That is a bit more than shown in James' tables. But they do not produce those numbers on a single exponent. That is, you can not LL a single exponent in about half of the time compared to a T classic. The Z's are still two discrete GPUs and still waste time exchanging data, no matter what magic interface they have between them. Therefore what you can do, you can take two exponents, and LL them in the same time on the Z, and get a time just a little bit longer than in a single T classic crunching a single exponent in the same range. And you get that time for only a bit more energy wasted (not double). With good cooling, you can stress them to get the performance of two Titans (not overclocked) at about 80% of the energy, or so. This does not suit me, therefore I am not in the market for Z's. I am not looking for maximum output (that would be actually achieved with Xeons, I think), but for the shortest time to test a single exponent (actually, you saw my setup when you visited me this year, I am still working at it). For this, nothing beats a well cooled, slightly OC'ed, Titan classic, yet (Xeons and "multicore" CPUs included). Last fiddled with by LaurV on 2017-05-29 at 05:46 Reason: clarified about the classic Tit doing a single exponent, not two

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2017-05-23, 16:47	#2
Mark Rose "/X\(‘-‘)/X\" Jan 2013 2²·733 Posts	LaurV probably wants your working Titan.

2017-05-25, 12:46	#4
airsquirrels "David" Jul 2015 Ohio 11×47 Posts	I believe all my cards are the EVGA variety. The Titan Blacks and Titan all look the same and the ones I have on blocks use the same blocks. I will inventory and provide the sticker numbers/pictures of all the cards and blocks I have later today.

2017-05-25, 19:33	#5
airsquirrels "David" Jul 2015 Ohio 11·47 Posts	I keep receiving "Upload Failed" attempting to upload images...