FPGA development board "Icarus" - DisContinued/ important announcement - page 41.

it_guru

newbie

Activity: 10

Merit: 0

Quote from: ngzhang on December 28, 2011, 10:58:21 PM

Quote from: freshzive on December 28, 2011, 04:42:36 PM

Interested in ordering one from the new batch. Sent you a PM.

pre-order/order will atart @ 1/1/2012 Cheesy

Quote from: it_guru on December 28, 2011, 09:03:30 PM

Hi ngzhang,

I have a couple of questions about your board. In your first post you state you are using a XC6SLX150 -2FGG484I. While looking at digikey I see that this is about 182 USD, I also saw that there is a XC6SLX150 -2FGG484C part that is 158 USD. This is a 24 USD savings on each FPGA and a 48 USD saving on the overall board. I looked to the data sheet and I couldn't find any difference between the two parts, can you tell me why you would pick an "I" part over a "C" part. Also if you could upgrade the chip what would you look to move to.

The gold pins at the bottom what do you think they will be used for in the future?

What about the many hols on the side, it looks like it's going to be there for some type of future socket?

Thanks
-IT

XC6SLX150 -2FGG484I is the cheapest i can buy.

the DIMM finger and FX1 connector is for customer's own use.

So that is good to know.

What about an upgraded chip? Is it worth it to go to something with more gates? Also what about swapping out the dimm finger for a PCIe x1 port being there is on chip logic for this?

-IT

simonk83

hero member

Activity: 798

Merit: 1000

Ok, so I might be interested in a couple of these. I run 4x 5870s at the mo but the electricity costs are killing me a bit. I might be willing to take the reduced hash rate for the power savings, we'll see.

Now, I run bithopper on my rig as it's efficient, basically. Is it possible to run the Icarus boards through Bithopper or are you limited to just one pool?

Also (and apologies if you've mentioned this and I've missed it), what sort of warranty is provided?

Thanks

ngzhang

hero member

Activity: 592

Merit: 501

We will stand and fight.

Quote from: freshzive on December 28, 2011, 04:42:36 PM

Interested in ordering one from the new batch. Sent you a PM.

pre-order/order will atart @ 1/1/2012 Cheesy

Quote from: it_guru on December 28, 2011, 09:03:30 PM

Hi ngzhang,

I have a couple of questions about your board. In your first post you state you are using a XC6SLX150 -2FGG484I. While looking at digikey I see that this is about 182 USD, I also saw that there is a XC6SLX150 -2FGG484C part that is 158 USD. This is a 24 USD savings on each FPGA and a 48 USD saving on the overall board. I looked to the data sheet and I couldn't find any difference between the two parts, can you tell me why you would pick an "I" part over a "C" part. Also if you could upgrade the chip what would you look to move to.

The gold pins at the bottom what do you think they will be used for in the future?

What about the many hols on the side, it looks like it's going to be there for some type of future socket?

Thanks
-IT

XC6SLX150 -2FGG484I is the cheapest i can buy.

the DIMM finger and FX1 connector is for customer's own use.

sadpandatech

hero member

Activity: 504

Merit: 500

Quote from: it_guru on December 28, 2011, 09:03:30 PM

Hi ngzhang,

I have a couple of questions about your board. In your first post you state you are using a XC6SLX150 -2FGG484I. While looking at digikey I see that this is about 182 USD, I also saw that there is a XC6SLX150 -2FGG484C part that is 158 USD. This is a 24 USD savings on each FPGA and a 48 USD saving on the overall board. I looked to the data sheet and I couldn't find any difference between the two parts, can you tell me why you would pick an "I" part over a "C" part. Also if you could upgrade the chip what would you look to move to.

The gold pins at the bottom what do you think they will be used for in the future?

What about the many hols on the side, it looks like it's going to be there for some type of future socket?

Thanks
-IT

I = Industrial Grade
C = Commercial Grade
Looking at this link here you can compare the differences in operating temperatures; http://search.digikey.com/scripts/dksearch/dksus.dll?vendor=0&keywords=XC6SLX150+-2FGG484

Strangely the Commercial grade has higher voltage tolerances than its Industrial counterpart. shrug.

it_guru

newbie

Activity: 10

Merit: 0

Hi ngzhang,

I have a couple of questions about your board. In your first post you state you are using a XC6SLX150 -2FGG484I. While looking at digikey I see that this is about 182 USD, I also saw that there is a XC6SLX150 -2FGG484C part that is 158 USD. This is a 24 USD savings on each FPGA and a 48 USD saving on the overall board. I looked to the data sheet and I couldn't find any difference between the two parts, can you tell me why you would pick an "I" part over a "C" part. Also if you could upgrade the chip what would you look to move to.

The gold pins at the bottom what do you think they will be used for in the future?

What about the many hols on the side, it looks like it's going to be there for some type of future socket?

Thanks
-IT

freshzive

sr. member

Activity: 447

Merit: 250

Interested in ordering one from the new batch. Sent you a PM.

P_Shep

legendary

Activity: 1795

Merit: 1208

This is not OK.

Quote from: DeathAndTaxes on December 28, 2011, 08:44:26 AM

Awesome FPGA Porn!

+1

DeathAndTaxes

donator

Activity: 1218

Merit: 1079

Gerald Davis

Awesome FPGA Porn!

Turbor

legendary

Activity: 1022

Merit: 1000

BitMinter

Quote from: spiccioli on December 28, 2011, 08:13:45 AM

Not to mention the 18K USD price tag... impressive as well

That separates the men from the boys Cool

spiccioli

legendary

Activity: 1379

Merit: 1003

nec sine labore

Quote from: Turbor on December 28, 2011, 07:24:52 AM

~650W - 11.4 GH/s Cheesy

impressive sh!t !

Not to mention the 18K USD price tag... impressive as well

spiccioli.

CA Coins

donator

Activity: 305

Merit: 250

Nice work!

Turbor

legendary

Activity: 1022

Merit: 1000

BitMinter

~650W - 11.4 GH/s Cheesy

impressive sh!t !

Peao

legendary

Activity: 1320

Merit: 1001

BkkCoins

hero member

Activity: 784

Merit: 1009

firstbits:1MinerQ

Awesome and psychedelic - scrolling that up and down the screen makes me dizzy.

ngzhang

hero member

Activity: 592

Merit: 501

We will stand and fight.

hit and run Grin

BkkCoins

hero member

Activity: 784

Merit: 1009

firstbits:1MinerQ

Watching.

ngzhang

hero member

Activity: 592

Merit: 501

We will stand and fight.

Quote from: DeathAndTaxes on December 26, 2011, 12:10:33 PM

As far as overheat detection ... I think ztex indicated as the chip overheats hashing rate declines. Since under normal conditions hashing rate shouldn't decline more than 15% a miner could be programmed to halt operation in the event hashing rate declines (i.e. don't keep feeding data to a chip running at 20MH/S cooking it). Obviously some hardware sensor would be better but mining monitoring has the advantage of not requiring any new hardware.

yes, you are right.
add to TODO list.

DeathAndTaxes

donator

Activity: 1218

Merit: 1079

Gerald Davis

As far as overheat detection ... I think ztex indicated as the chip overheats hashing rate declines. Since under normal conditions hashing rate shouldn't decline more than 15% a miner could be programmed to halt operation in the event hashing rate declines (i.e. don't keep feeding data to a chip running at 20MH/S cooking it). Obviously some hardware sensor would be better but mining monitoring has the advantage of not requiring any new hardware.

ngzhang

hero member

Activity: 592

Merit: 501

We will stand and fight.

no matter the cost.
every one's pleasure is different, i think. Grin

so any manually assembling question is welcome, but not include like "where/ howmuch did you buy them" or "could you buy some for me " question.

pazor

legendary

Activity: 966

Merit: 1000

hello,

its a good question!

how much is the kit (PCB, components, etc.) without work of soldering ?

Topic: FPGA development board "Icarus" - DisContinued/ important announcement - page 41. (Read 207279 times)