[HOWTO] flash your jalapeno to 8+ ghs

[erk]

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.

Odd, as the photo in the OP appears to have the heat sink on and the JTAG cable running to the board.

[danattacker]

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.

[Monetizer]

Was this a stock version or a 7/GHs?

[peterepeat]

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. You might be able to make it fit if you remove the clamps at the end of the cable.

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

[warhawk187]

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?

[crazyates]

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.

[Photon939]

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?"

[jelin1984]

Is the 5 ghz version of jalapeño or the 7 ghz of jalapeno

[erk]

Is the 5 ghz version of jalapeño or the 7 ghz of jalapeno

Read the OP

[juhakall]

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.

[vapourminer]

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.

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

[jelin1984]

is the 5ghz version or 7 ghz version?

[philips]

How thick was the original thermal pad used by BFL on Jalapeno? 0.5...1 mm?

[vapourminer]

is the 5ghz version or 7 ghz version?

mine was a 5, danattackers was a 7 I think.

[vapourminer]

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).

[jelin1984]

so yours go from  5ghz go to 8ghz?

[vapourminer]

so yours go from  5ghz go to 8ghz?

yes

[jelin1984]

great

also does anoyone know which thermal pad is the better???

[philips]

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

[jelin1984]

why not 1mm?
i think will be better 1mm