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Topic: Will tip BTC for good info/suggestions on the hardware I'm about to buy - page 2. (Read 4777 times)

full member
Activity: 140
Merit: 100
This is awesome, and hits the price I was looking for much better. This is what I'm going with.

Thanks, out of curiosity, which option are you planning on? Fusion or the other motherboard and processor?
member
Activity: 82
Merit: 10
Just a observation (and something I want to know myself)

The motherboard your buying has 2 x16 slots for your two cards...Fair enough
But in the stats on them it says one is x16 and one is x4

Quote
PCI Express 2.0 x16
2 (x16, x4)

Does this mean one slot is slower and therefore if your using this for gaming does it mean your going to lose performance on one of your cards

It means that when both slots are in use, they will run at x16 and x4 respectively.  The actual performance difference in games between an x4 and x16 slot is somewhere between 2-10% depending on the game and card used.

Find a sub $200 x16/x16 board is near impossible.  x8/x8 would be the better option, but in reality a user would likely not notice much of a difference.

Ahh.. OK thanks for explaining

However I'll see your Sub $200 and raise you this
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130274&nm_mc=OTC-pr1c3grabb3r&cm_mmc=OTC-pr1c3grabb3r-_-Motherboards+-+AMD-_-MSI-_-13130274

OP this had 4 x16 slots incase you ever decide to expand your mining rig with another card or two..No mods needed
newbie
Activity: 42
Merit: 0
Just a observation (and something I want to know myself)

The motherboard your buying has 2 x16 slots for your two cards...Fair enough
But in the stats on them it says one is x16 and one is x4

Quote
PCI Express 2.0 x16
2 (x16, x4)

Does this mean one slot is slower and therefore if your using this for gaming does it mean your going to lose performance on one of your cards

It means that when both slots are in use, they will run at x16 and x4 respectively.  The actual performance difference in games between an x4 and x16 slot is somewhere between 2-10% depending on the game and card used.

Find a sub $200 x16/x16 board is near impossible.  x8/x8 would be the better option, but in reality a user would likely not notice much of a difference.
member
Activity: 82
Merit: 10
Just a observation (and something I want to know myself)

The motherboard your buying has 2 x16 slots for your two cards...Fair enough
But in the stats on them it says one is x16 and one is x4

Quote
PCI Express 2.0 x16
2 (x16, x4)

Does this mean one slot is slower and therefore if your using this for gaming does it mean your going to lose performance on one of your cards
member
Activity: 113
Merit: 10
sr. member
Activity: 378
Merit: 250
Here's the general process about flashing your card's bios: http://www.techpowerup.com/articles/overclocking/vidcard/159

But that walks you through flashing your 6950 to 6970.  You don't want to do that.  You want to flash it it with the custom 6950 BIOS that unlocks the shaders.  Check out this point for specific info on that.  http://www.tomshardware.com/forum/316974-33-radeon-6950-shader-unlock-instructions

Can you fubar your cards.  Yep...

Is it worth the risk.  I dunno, it's up to you.  Flashing mine jumped my hashing rate about 10-15% on the card. And with 860 GPU clock and stock memory (1250, got wonky with anything else), I'm getting about 369 MH/s

Maybe try it on one and worst case you can always package it back up and return it?  You're call though.

newbie
Activity: 42
Merit: 0
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.668135&nm_mc=AFC-C8JUNCTION&cm_mmc=AFC-C8JUNCTION-_-EMC-060911-Latest-_-Combo-_-Combo668135-LM1A&PID=3668349&AID=10440897

Combo buy on PSU and DVD drive.  Also has a $30 MIR on it.

OCZ isn't as good as Antec, but it's much cheaper, 2 dedicated 12V rails @ 25A, and it's modular so you can more easily route wires.

700W is more than enough for this system.

As far as unlocking shaders.  Yes, if you do it incorrectly, you can fry the card.  Any time you are messing with the firmware of a piece of hardware there is an inherent risk of something going wrong.  These 2 cards do not have a dual bios switch, so you can't just flip a switch to recover.

Having said that, I'd still recommend it.  It's a nice little performance bump, and as long as you follow along with a good guide, there is barely any chance of frying something.  Just unlocking the shaders without touching voltage should give you a decent little bump.  They you can overclock normally.

If you found this information useful you can tip me at 1Cwmb2SftoPABQtqKoGoG68WdqDs4NRcyp

wrong you cant flash a card that's not a stock amd card and its not a stock card whit out the bios switch. if teh card does not have amd by the pcie connector you cant unlock them and whit  a reference card if you brick it you just switch back jsut dotn put a 6970 bois on it unlock yours or dl the asus 6950 whit the volt mod bios

Correct, you can't just flash an existing BIOS on to it.  But you CAN unlock the shaders with RBE, then overclock like normal.  It's been discussed a thousand times before, it works.  Reference cards allow you to use the sapphire bios and just flash with that, non reference and 1GB cards require you to use RBE to unlock.
member
Activity: 75
Merit: 10
also, what are the risks in doing that? Could I possibly fry my card if I do it wrong? Is it something someone relatively non technical could figure out?

Yes it involves overwriting the stock bios (voiding warranty) with another bios. Yes you can fry your card by flashing it to 6970 bios.

But there is a safer alternative, you can write a custom 6950 bios to the card which unlocks the extra shaders, but leaves the clock speed and voltage at stock 6950 levels. Then you can manually overclock yourself to safe levels.

You will need to use winflash I believe it is called, to write a downloaded bios over the existing bios (make sure to back up your existing bios) to unlock the extra shaders. This can only be done on reference 2GB 6950s btw.

You can unlock the shaders on any 6950 using RBE AFAIK.  Reference 2GB 6950s can just be flashed over with a reference 6970 BIOS, but that's not exactly safe.  Like you said, you should use a custom one that doesn't touch clocks or voltages.

no you cant if the pcb is not built by amd you cant unlock it
member
Activity: 75
Merit: 10
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.668135&nm_mc=AFC-C8JUNCTION&cm_mmc=AFC-C8JUNCTION-_-EMC-060911-Latest-_-Combo-_-Combo668135-LM1A&PID=3668349&AID=10440897

Combo buy on PSU and DVD drive.  Also has a $30 MIR on it.

OCZ isn't as good as Antec, but it's much cheaper, 2 dedicated 12V rails @ 25A, and it's modular so you can more easily route wires.

700W is more than enough for this system.

As far as unlocking shaders.  Yes, if you do it incorrectly, you can fry the card.  Any time you are messing with the firmware of a piece of hardware there is an inherent risk of something going wrong.  These 2 cards do not have a dual bios switch, so you can't just flip a switch to recover.

Having said that, I'd still recommend it.  It's a nice little performance bump, and as long as you follow along with a good guide, there is barely any chance of frying something.  Just unlocking the shaders without touching voltage should give you a decent little bump.  They you can overclock normally.

If you found this information useful you can tip me at 1Cwmb2SftoPABQtqKoGoG68WdqDs4NRcyp

wrong you cant flash a card that's not a stock amd card and its not a stock card whit out the bios switch. if teh card does not have amd by the pcie connector you cant unlock them and whit  a reference card if you brick it you just switch back jsut dotn put a 6970 bois on it unlock yours or dl the asus 6950 whit the volt mod bios
newbie
Activity: 42
Merit: 0
also, what are the risks in doing that? Could I possibly fry my card if I do it wrong? Is it something someone relatively non technical could figure out?

Yes it involves overwriting the stock bios (voiding warranty) with another bios. Yes you can fry your card by flashing it to 6970 bios.

But there is a safer alternative, you can write a custom 6950 bios to the card which unlocks the extra shaders, but leaves the clock speed and voltage at stock 6950 levels. Then you can manually overclock yourself to safe levels.

You will need to use winflash I believe it is called, to write a downloaded bios over the existing bios (make sure to back up your existing bios) to unlock the extra shaders. This can only be done on reference 2GB 6950s btw.

You can unlock the shaders on any 6950 using RBE AFAIK.  Reference 2GB 6950s can just be flashed over with a reference 6970 BIOS, but that's not exactly safe.  Like you said, you should use a custom one that doesn't touch clocks or voltages.
newbie
Activity: 42
Merit: 0
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.668135&nm_mc=AFC-C8JUNCTION&cm_mmc=AFC-C8JUNCTION-_-EMC-060911-Latest-_-Combo-_-Combo668135-LM1A&PID=3668349&AID=10440897

Combo buy on PSU and DVD drive.  Also has a $30 MIR on it.

OCZ isn't as good as Antec, but it's much cheaper, 2 dedicated 12V rails @ 25A, and it's modular so you can more easily route wires.

700W is more than enough for this system.

As far as unlocking shaders.  Yes, if you do it incorrectly, you can fry the card.  Any time you are messing with the firmware of a piece of hardware there is an inherent risk of something going wrong.  These 2 cards do not have a dual bios switch, so you can't just flip a switch to recover.

Having said that, I'd still recommend it.  It's a nice little performance bump, and as long as you follow along with a good guide, there is barely any chance of frying something.  Just unlocking the shaders without touching voltage should give you a decent little bump.  They you can overclock normally.

If you found this information useful you can tip me at 1Cwmb2SftoPABQtqKoGoG68WdqDs4NRcyp
full member
Activity: 140
Merit: 100
Depending on what you mean by "light gaming" this may work for you and be much cheaper:

http://www.newegg.com/Product/Product.aspx?Item=N82E16827151233

http://www.newegg.com/Product/Product.aspx?Item=N82E16811133094

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

http://www.newegg.com/Product/Product.aspx?Item=N82E16822148701

http://www.newegg.com/Product/Product.aspx?Item=N82E16814102906

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231253

http://www.newegg.com/Product/Product.aspx?Item=13-130-567

Much cheaper, if you think you need more power, substitute the Fusion motherboard for:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131734

and

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103846
Which you may be able to unlock.

Why a 5770? Because it plays all modern games excellently at standard resolutions, besides, Windows XP cant use DX10 or 11, so there is no reason to purchase anything better especially since the 7000 series should be coming around the bend soon and you will feel foolish for paying so much for something you can't even use fully.

Why only 4GB of ram? there is barely any difference for gaming unless you play at very high resolutions.

Also Windows XP cannot use over 3.5GB of ram unless you modify it heavily anyway.
hero member
Activity: 602
Merit: 500
also, what are the risks in doing that? Could I possibly fry my card if I do it wrong? Is it something someone relatively non technical could figure out?

Yes it involves overwriting the stock bios (voiding warranty) with another bios. Yes you can fry your card by flashing it to 6970 bios.

But there is a safer alternative, you can write a custom 6950 bios to the card which unlocks the extra shaders, but leaves the clock speed and voltage at stock 6950 levels. Then you can manually overclock yourself to safe levels.

You will need to use winflash I believe it is called, to write a downloaded bios over the existing bios (make sure to back up your existing bios) to unlock the extra shaders. This can only be done on reference 2GB 6950s btw.
member
Activity: 113
Merit: 10
also, what are the risks in doing that? Could I possibly fry my card if I do it wrong? Is it something someone relatively non technical could figure out?
member
Activity: 113
Merit: 10
What exactly does it mean to flash the bios? I'm rewriting the software to make it function like a 6970 rather than a 6950?
member
Activity: 84
Merit: 10
You can probably drop the CPU down a bit since there's not really a reason for Quad Core with what you're planning on doing.  You can probably go with either one of these, save yourself $80 and be fine.

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103873

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103903

The other thing to be worried about is that case might be a bit too tight with those two cards.  It'll probably fit, but really cram stuff together.  Luckily your vid cards have the power pins on top, so that should be alright.

Those 6950's are pretty good and if you are a gambler, you could always flash them with a bios to unlock some of the extra shaders (don't do the 6970 bios flash, just find the 6950 shader unlock flash..)

Thank you, switched to the first CPU. I'll also do some research on what the heck "flashing the bios to unlock the extra shaders" even means Wink Tip sent.

if you want to flash the 6950 bios to unlock shaders you will need a reference model. You can tell the reference from non reference since reference models have the fan on 1 side while non reference models usually have the fan near the middle.

like this : http://www.newegg.com/Product/Product.aspx?Item=N82E16814127555&cm_re=radeon_6950-_-14-127-555-_-Product
that is a reference model. Buy fast cause these will be gone too since the 5830's are being eaten up the 6950's that can flash to 6970 will be next to go probably.
member
Activity: 113
Merit: 10
6950 uses about 200w on its own, and that power supply is very weak, definitely dont recommend it:

Output
    +3.3V@25A, +5V@25A, +12V1@46A, [email protected], [email protected]

Only one 12V rail, at 46Amps max. That is very low. You don't want all that hardware on one rail. Try and find one with at least 4 rails, maybe 18A each, try Antec 850W maybe?

This will keep your cards stable and your rig from blowing out with all that 24/7 load. Very important component.

Thanks for the suggestion. This was something I was worried about, so I'm glad I posted this thread. I switched to this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371024

member
Activity: 113
Merit: 10
You can probably drop the CPU down a bit since there's not really a reason for Quad Core with what you're planning on doing.  You can probably go with either one of these, save yourself $80 and be fine.

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103873

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103903

The other thing to be worried about is that case might be a bit too tight with those two cards.  It'll probably fit, but really cram stuff together.  Luckily your vid cards have the power pins on top, so that should be alright.

Those 6950's are pretty good and if you are a gambler, you could always flash them with a bios to unlock some of the extra shaders (don't do the 6970 bios flash, just find the 6950 shader unlock flash..)

Thank you, switched to the first CPU. I'll also do some research on what the heck "flashing the bios to unlock the extra shaders" even means Wink Tip sent.
hero member
Activity: 767
Merit: 500
I went though ebay completed sales and the comparison chart and found the 5870 was the best price/hash for me.  Bought two and mining at around 800Mh/s for 450W total including CPU/HD at the moment.

Good luck!

Will
newbie
Activity: 56
Merit: 0
6950 uses about 200w on its own, and that power supply is very weak, definitely dont recommend it:

Output
    +3.3V@25A, +5V@25A, +12V1@46A, [email protected], [email protected]

Only one 12V rail, at 46Amps max. That is very low. You don't want all that hardware on one rail. Try and find one with at least 4 rails, maybe 18A each, try Antec 850W maybe?

This will keep your cards stable and your rig from blowing out with all that 24/7 load. Very important component.
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