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Cheap CPU and Mobo with crossfire support?

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June 26, 2012 11:19:41 AM

Hey guys, recently my I5 750 died so i am in need of a new cpu. :( 

I was thinking of getting the i5 3570k, but i thought i do not need that much power to push 2 hd 5870s.

So my question is: what ivy bridge CPU will be just enough + some head room to push 2x HD5870 (ie. enough to push the GPU, so that the CPU wont be a bottleneck).

If you have a cheap m-ATX mobo in mind (with CF support and 4 Ram Dimm) Dont forget to check it it! :)  thanks Guys :love: 
a c 78 à CPUs
June 26, 2012 11:40:54 AM

Ivy Bridge i3s aren't out yet although going from a quad core to a dual core would kinda be a step down.

This is the cheapest Ivy Bridge that I can find:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Mobo with crossfire support and 4 DIMMS
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Does it have to be an Intel? an overclcoked Phenom II would basically be a sidegrade and much cheaper.

http://www.anandtech.com/bench/Product/109?vs=362

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Although, I don't think there are any good options for a microATX with Crossfire support, you'd have to go full-size ATX for it.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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June 26, 2012 12:37:46 PM

Thanks Mate,

i just needed a CPU that is powerful enough to push the HD 5870 CFs, so that the CPU wont be a bottleneck. Doesn't need to be Intel but i don't prefer over clocking it, coz i will need a mobo with good power controlling/ phase crap. So.... yea. Any ways thanks for the help. And it doesnt have to be M-Atx, but usually they are cheaper :pt1cable: 

Anyway my main goal is: Keep the HD 5870 CFs runing with a CPU that is wont bottleneck it. Until the next generation CPUs come out.

Thanks, once again.

I dont have any experience with AMD, but i wont mind if the performance is good (good enough so it wont be a bottleneck) and the price is great :) 
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June 26, 2012 12:40:42 PM

I was thinking maybe one of thoose $100 AMD x6 CPUs? if i go down that path mobo suggestion?
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a c 78 à CPUs
June 26, 2012 1:22:07 PM

No problemo,


The problem with the Phenom II x6s are they are lower clock speed, they also have locked multipliers so this limits their overclocking potential, and if you're gaming thats no good. (Most games only use 2 cores, although there are some exceptions to this)

They do make some unlocked multiplier x6s (Black Edition denotes unlocked), 1090T and 1100T to name a couple, although these are almost impossible to find in new condition now due to Phenom IIs being discontinued early this year.

As far as the FX-6100/6200s they're actually a step down even though they're newer, AMD didn't do such a hot job with them, they have a very Dr. Jeckel and Mr. Hyde personality to them, sometimes they're decent, other things they aren't as great at. The Phenom IIs offer more consistent performance. If you went that path however, AM3+ socket motherboards work with both Phenom IIs and FX processors.
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June 26, 2012 11:24:34 PM

Thanks once again for the useful intel. I have made up my mind and went with:

Intel Core i5 3450 3.10GHz $202.00

Asus P8Z77-V LX LGA1155 Motherboard $138.00


As for i cant find the options you have sugguested in my local computer hardware store (Australia is real bad, wish i live in the US).

I might need to wait for another month or two so i have the $$ to buy the stuff.

Also would you recommend another step up?

Intel Core i5 3570K 3.40GHz LGA1155 $243.00

Asus P8Z77‐V‐Pro LGA1155 Mainboard $229.00 (saw on a forum that it is popular among gamers and over-clocks real good)

Another question with this step up is: Do i need a motherboard that expensive in order to over clock? can i stick with Asus P8Z77-V LX LGA1155 Motherboard and still be able to overclock?
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a b à CPUs
June 27, 2012 12:57:12 AM

Hi :) 

My gaming machines run crossfired 5870s (the rare 2 gb versions) and I run Amd 1100T BE`s (not overclocked) with no problems at all...

All the best Brett :) 
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a c 78 à CPUs
June 27, 2012 2:51:13 PM

leehong888222 said:
Thanks once again for the useful intel. I have made up my mind and went with:

Intel Core i5 3450 3.10GHz $202.00

Asus P8Z77-V LX LGA1155 Motherboard $138.00


As for i cant find the options you have sugguested in my local computer hardware store (Australia is real bad, wish i live in the US).

I might need to wait for another month or two so i have the $$ to buy the stuff.

Also would you recommend another step up?

Intel Core i5 3570K 3.40GHz LGA1155 $243.00

Asus P8Z77‐V‐Pro LGA1155 Mainboard $229.00 (saw on a forum that it is popular among gamers and over-clocks real good)

Another question with this step up is: Do i need a motherboard that expensive in order to over clock? can i stick with Asus P8Z77-V LX LGA1155 Motherboard and still be able to overclock?


Hi sorry, been on the road past couple days.

No you really don't need a super expensive motherboard to overclock, although quality is always a concern. Honestly though there are relativively cheaper options that will get the job done as well. I would consider an Asrock Z77 or Z68 chipset, Extreme gen 3 or 4, these are very good boards for the budget consumer.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 4, 2012 9:36:16 AM

its okay, we all have our busy moments. Yea i have had a look at the asrock extreme 4 mobo, and i really like it (the price is right). Apartenly they have a thiner PCB :S dunno if it is a concern. Could be one when are you installing it.
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a c 78 à CPUs
July 4, 2012 7:15:19 PM

*smack*, because it costs more.
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