next step i got motherboard this one http://www.gigabyte.com/products/product-page.aspx?pid=3891#ov waiting your opinions. 
Topic: r9 290x (Read 1992 times)
http://www.amazon.co.uk/Sapphire-Graphics-Express-Display-Technology/dp/B00FZLFHEI/ref=sr_1_fkmr0_2?s=computers&ie=UTF8&qid=1388174790&sr=1-2-fkmr0&keywords=R9+290X%2C+100361SR#productDetails
I just bought one, guys if i mess my mining rig ill make good gaming pc anayway what do you think about this card ,is good choice?
I just bought one, guys if i mess my mining rig ill make good gaming pc anayway
what do you think about this card ,is good choice?It's a very good card, and if you follow my directions with a good TC (1025/1500) you should get around 900kh/s.
http://www.amazon.co.uk/Sapphire-Graphics-Express-Display-Technology/dp/B00FZLFHEI/ref=sr_1_fkmr0_2?s=computers&ie=UTF8&qid=1388174790&sr=1-2-fkmr0&keywords=R9+290X%2C+100361SR#productDetails
I just bought one, guys if i mess my mining rig ill make good gaming pc anayway what do you think about this card ,is good choice?
I just bought one, guys if i mess my mining rig ill make good gaming pc anayway
what do you think about this card ,is good choice? I wouldn't need to undervolt it, if it's electric bill you're talking about, but thanks for the replies 
It's not just about electric bill. It can also significantly lower temperature of GPUs.
In my experience sapphire 280x's are faster than gigabytes by 20-30kh/s. I've had(have) over 10 sapphire 280x cards, had 6 gigabyte 280s and returned them before all the litecoin/scrypt craziness.
I only have one sapphire 290x, and it does 937kh/s easily. It did so on air reliably at 1025/1500, but under water it manages the same hashrate at 1002/1500. I don't experience any black screens or anything, but it is only one GPU.
I only have one sapphire 290x, and it does 937kh/s easily. It did so on air reliably at 1025/1500, but under water it manages the same hashrate at 1002/1500. I don't experience any black screens or anything, but it is only one GPU.
What software did you use to do that? And did you overclock core and memory clock?
+1...how the hell did you get a gigabyte r9 280x undervolted? can you provide details? I've tried to undervolt my cards but no such luck. I'm pushing 940 watts from my 3 cards, hitting the wall of my 1000w psu.
I've followed this guide. Step by step, everything worked fine:
http://rumorscity.com/2013/12/09/how-to-modify-video-bios-to-undervolt-gpu-in-linux/
Well my r9 280x is running on this setting. It just gives me best performance:
intensity : 13, thread-concurrency : 11200, gpu-threads : 2, gpu-engine : 1035, gpu-memclock : 1500, gpu-threads : 2
(I don't remember default parameters of GPU, so don't know if I should call it overclock
)
Can i use different cards ?if yes .would i need install drivers of each card?
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
What software did you use to do that? And did you overclock core and memory clock?
Not 290x, but I have 3 280x's. A gigabyte, an Asus, and a Sapphire. I've tried everything i can to boost the performance, but I think I'm just about maxed. Anyway, the Sapphire is the fastest of the 3, running around 730Kh/s. the gigabyte and Asus both run around 710Kh/s. Just thought I'd add that the Sapphires are faster
I havent used anything yet,I just wanna start to build mining rig but before buying stuffes im looking for info i dont wanna buy and throw it away,I just asking would be that card useful ?
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
What software did you use to do that? And did you overclock core and memory clock?
what are yours opinions of this card? http://www.ebay.co.uk/itm/Sapphire-Radeon-HD-7950-Graphics-Card-OC-925MHZ-3GB-GDDR5-DVI-HDMI-2x-DVI-/201008920097
I've got only gigabytes:
r9 280x ~ 720 kh/s
r9 290 (! without x !) ~ 870 kh/s
Be aware that gigabyte GPUs are voltage locked, so you can't undervolt them directly throught software like trixx, cgminer etc.
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
r9 280x ~ 720 kh/s
r9 290 (! without x !) ~ 870 kh/s
Be aware that gigabyte GPUs are voltage locked, so you can't undervolt them directly throught software like trixx, cgminer etc.
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
I wouldn't need to undervolt it, if it's electric bill you're talking about, but thanks for the replies
SAPPHIRE is the best. Veterans say so. Also look for a 7990 if you can get it.
Also try your luck here,
Instructions:
Also try your luck here,
Instructions:
Quote
Sapphire R9 290 raffle to be held tomorrow. This beauty pulls out ~880 Kh/s and is out of stock everywhere.
Get here while you can to get 1 raffle ticket.
Find a LTC block or two for extra 1 raffle ticket per block and a DOGE block for 0.2 extra ticket per block.
www.netcodepool.org
Get here while you can to get 1 raffle ticket.
Find a LTC block or two for extra 1 raffle ticket per block and a DOGE block for 0.2 extra ticket per block.
www.netcodepool.org
I've got only gigabytes:
r9 280x ~ 720 kh/s
r9 290 (! without x !) ~ 870 kh/s
Be aware that gigabyte GPUs are voltage locked, so you can't undervolt them directly throught software like trixx, cgminer etc.
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
r9 280x ~ 720 kh/s
r9 290 (! without x !) ~ 870 kh/s
Be aware that gigabyte GPUs are voltage locked, so you can't undervolt them directly throught software like trixx, cgminer etc.
However, I undervolted GPU voltage by flashing GPU vBios on r9 280x and instead of 1.2V now runs on 1.075V and it's completly stable.
Guys help me build litecoin mining rig under 2000$.advice me with the best choice of computers components.
Motherboard-
GPU-
PSU-
Memory-
Processor-
because i know 7950 perfect but it hard to find and very expensive ,other thing is i dont wanna buy very expensive Motherboard i prefer to buy cheaper and run max 4 gpus on motherboard,and what kind of processor should i buy? Do i need good processor ?do i need much memory ?Is enough like 2 GB for 4 GPUS? Sorry im still noob on litecoins mining hardware
Motherboard-
GPU-
PSU-
Memory-
Processor-
because i know 7950 perfect but it hard to find and very expensive ,other thing is i dont wanna buy very expensive Motherboard i prefer to buy cheaper and run max 4 gpus on motherboard,and what kind of processor should i buy? Do i need good processor ?do i need much memory ?Is enough like 2 GB for 4 GPUS? Sorry im still noob on litecoins mining hardware
I have 5 x Sapphire R9 290's and 1 x Sapphire OC 7970 -- I too prefer Sapphire!
From what I've seen sapphire is the fastest. I have the ASUS and get 880 kh/s though.
have a sapphire 290x running at 880Kh/s
ASUS Radeon HD 7990 6GB, i headr that this card can run total 1400kh/s,,is that true?Peoples says it has two cores which run at 700kh/s each core.
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