why not 1mm?
i think will be better 1mm
Topic: [HOWTO] flash your jalapeno to 8+ ghs - page 18. (Read 85211 times)
How thick was the original thermal pad used by BFL on Jalapeno? 0.5...1 mm?
not sure, my tape fell apart as soon as I removed the heatsink
dont think it makes a difference as it doesnt need to match the height to anything. FWIW the tape was pretty thin, thinner than the heat tape on the VRM s on my GTX285's (used for folding @ home, not mining).
Right, I intend to reflash also, but not until I have the thermal pads in hand.
I tried to find out what are the characteristics of thermal pads used by BFL, and so far there is a post by Kano (on BFL forum) mentioning 14.0 W/mK.
So I suppose something like this will do: http://www.frozencpu.com/products/17499/thr-181/Fujipoly_Ultra_Extreme_System_Builder_Thermal_Pad_-_60_x_50_x_05_-_Thermal_Conductivity_170_WmK.html
great
also does anoyone know which thermal pad is the better?
??
also does anoyone know which thermal pad is the better?
?? 
so yours go from 5ghz go to 8ghz?
How thick was the original thermal pad used by BFL on Jalapeno? 0.5...1 mm?
not sure, my tape fell apart as soon as I removed the heatsink
dont think it makes a difference as it doesnt need to match the height to anything. FWIW the tape was pretty thin, thinner than the heat tape on the VRM s on my GTX285's (used for folding @ home, not mining).
is the 5ghz version or 7 ghz version?
mine was a 5, danattackers was a 7 I think.
How thick was the original thermal pad used by BFL on Jalapeno? 0.5...1 mm?
is the 5ghz version or 7 ghz version?
In the OP cgminer screeshot, I can see the jalapeno is running at 36C / 3.07V. My 5.8GH/s jalapeno is usually around 56C / 3.8V. It has the older heatpipe heatsink, but isn't that voltage of 3.8V quite high? It does have two active chips, though, so at least it's not a single-chip version. cgminer stats output is saying "PROCESSOR 3: 201 MHz PROCESSOR 7: 194 MHz ENGINES: 30 FREQUENCY: 189 MHz"
Just wondering if my unit could take this overclocking, since the voltage is quite high already. The running voltage & temps (both before & after) would be useful information to include in any report of successful OC.
Just wondering if my unit could take this overclocking, since the voltage is quite high already. The running voltage & temps (both before & after) would be useful information to include in any report of successful OC.
before flash: 30C, ~3.1v
after flash: 37C, ~3.1v
ambient 23C
been running caseless with a side fan pretty much since day 1.
from what I saw playing around, the higher the temp, the higher the voltage.
try running caseless, with the fan blowing down. see what the temps and voltage is.
added temps to the OP
In the OP cgminer screeshot, I can see the jalapeno is running at 36C / 3.07V. My 5.8GH/s jalapeno is usually around 56C / 3.8V. It has the older heatpipe heatsink, but isn't that voltage of 3.8V quite high? It does have two active chips, though, so at least it's not a single-chip version. cgminer stats output is saying "PROCESSOR 3: 201 MHz PROCESSOR 7: 194 MHz ENGINES: 30 FREQUENCY: 189 MHz"
Just wondering if my unit could take this overclocking, since the voltage is quite high already. The running voltage & temps (both before & after) would be useful information to include in any report of successful OC.
Just wondering if my unit could take this overclocking, since the voltage is quite high already. The running voltage & temps (both before & after) would be useful information to include in any report of successful OC.
Is the 5 ghz version of jalapeño or the 7 ghz of jalapeno
Read the OP
Is the 5 ghz version of jalapeño or the 7 ghz of jalapeno
I just grabbed a dragon, will let you know the results.
Plus now I'll finally have a good programmer and I can toss this ATTINY based one I have. That thing was always kinda flaky.
Meanwhile at the Atmel hardware dev office: "Why are we selling a shitload of AVR Dragons this week?"
Plus now I'll finally have a good programmer and I can toss this ATTINY based one I have. That thing was always kinda flaky.
Meanwhile at the Atmel hardware dev office: "Why are we selling a shitload of AVR Dragons this week?"
Was this a stock version or a 7/GHs?
my 1.0.0 firmware 5 ghs jally had the security bit set..
Sounds like he only had a 5GH/s model.
Would this be worth the risk on an upgraded Jalapeno if they're not hashing over 8Gh/s as is? And would Arctic Silver thermal paste (or something like it) work better than the original stuff they put on the chips? I have 4 sequentially numbered Jalapenos but upon taking the cases off (reduced temps by 10C BTW, the case is a heat-trap) seems I have 2 versions of each, with one pair having heatsinks shown here:
And the other two without it. What gives?
And the other two without it. What gives?
Can't you just simply bolt the original heat sink back on after you plug in the JTAG cable before you power up?
Nope. It's still in the way.
EDIT: Actually, when you asked this question you got me thinking.
Never mind, I disassembled the end of my cable down to where you can see the spikes that go into the cable and I don't think it would fit either.
thanks for the info. A couple of questions come to mind:
Can you say where the metal backing plate came from - was that from the Jalapeno?
Do you think a e.g. spare AM2 CPU Heatsink+fan rested on the chips while JTAGing - would it be big enough ? e.g. http://img.tomshardware.com/us/2006/05/23/amd_reinvents_itself/box_cooler_am2.jpg
Was this a stock version or a 7/GHs?
Odd, as the photo in the OP appears to have the heat sink on and the JTAG cable running to the board.
He has the older heatsink with heatpipes which do not get in the way of the JTAG cable.
Can't you just simply bolt the original heat sink back on after you plug in the JTAG cable before you power up?
Nope. It's still in the way.
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