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AMD computer build advice

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Hi,

AS many have done, Im building a new computer to play battlefield 3 and reached an ultimatum mostly concerning either the

AMD FX-8120 or the FX-6100 CPU

OR

A AMD Radeon 6950 or 6970

Approx purchase date: Roughly on or slightly after black friday in hopes of finding a deal or 2 on Monitors, HDD, etc.

Budget: Approx: $1000-1500 after tax, shipping, etc. Im frugal minded

System Usage:[b/] Mostly gaming and multitasking (e.g. internet browsing, music, multiple word, excel, powerpoint programs running)

Parts Not Required: Computer case, Power Supply, and Mouse (Thermaltake Element G VL18501W2Z Black SECC / Plastic ATX Mid Tower Computer Gaming Case), Power supply (850W Modular Power Supply / comes with case)

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

Preferred Website(s) for Parts: Mostly Newegg.com but am willingly to look other places

Country of Origin: United States, California

Parts Preferences Decided AMD cpu

Overclocking: Most likely

SLI or Crossfire: yes

Monitor Resolution: most likely 1920x1080, looking for a 23.6in or 24in monitor

Additional Comments: I chose an AMD cpu because i couldnt find any motheboards with a LGA1155 cpu socket that support dual x16. I plan on running an SLI or crossover setup eventually so dual x16 helps or so ive read.

I know the performance difference between the 6950 & 6970 is small in regards to price paid but im curious as to what others think

Parts I plan to Buy:

Debating between the AMD FX-6100 and the FX-8120

AMD FX-8120 Zambezi 3.1GHz 8MB L2 Cache 8MB L3 Cache Socket AM3+ 125W Eight-Core CPU
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

MD FX-6100 Zambezi 3.3GHz 6MB L2 Cache 8MB L3 Cache Socket AM3+ 95W Six-Core CPU
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ASUS Sabertooth 990FX AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAPPHIRE 100312-3SR Radeon HD 6950 Dirt3 Edition 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBSR
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ViewSonic VX2453mh-LED Black 23.6" Full HD HDMI LED BackLight LCD Monitor Slim Design w/Speakers 250 cd/m2 DC 30,000,000:1 (1,000:1)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I apologize for the large post but i like to be thorough in my research before buying parts.

Thank in advance to those who respond, your input and advice is greatly appreciated!!
Evan

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Ive consider that. Only reason im considering the AMD FX-8120 is that it is a $40 difference from the FX-6100 and I plan on keeping the computer for a few years.

Ive seen the benchmarks but would there be considerable performance difference between the FX-8120 and the FX-6100?

yeah i would have to say most games now dont even use all of the processors. I mean they use them all somewhat but the gpu is really going to make the difference. Either way, in 2 years, you will be looking for a bigger and better one :) 
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Homebuilt system Authority

Disclaimer: my primary system is AMD, on an Asus Sabertooth 990FX. I'm not now, but I did anticipate the possibility of running multiple GPUs in the future.
Ok, with that out of the way, before you build a system with the intention of running multiple graphics cards, read this: http://www.hardocp.com/article/2011/11/03/amd_fx8150_mu... . It may not change your mind, but it should certainly clarify that x16,x16 PCIE slots are not what makes the biggest performance difference.

Hanhoffcustom,

I agree that most games are usually GPU dominant. I believe Battlefield 3 is espically among those games that are. and yes always upgrading, a never ending cycle ha

Onus said:
Disclaimer: my primary system is AMD, on an Asus Sabertooth 990FX. I'm not now, but I did anticipate the possibility of running multiple GPUs in the future.
Ok, with that out of the way, before you build a system with the intention of running multiple graphics cards, read this: http://www.hardocp.com/article/2011/11/03/amd_fx8150_mu... . It may not change your mind, but it should certainly clarify that x16,x16 PCIE slots are not what makes the biggest performance difference.


I was originally set on buying an i5 2500k but from hearing that dual x16 was the main thing when running SLI i converted, almost regrettably to the AMD knowing that intel was just better in just about every way.

Now im beginning to think i should go back to an i5 2500k setup.

Do you think this may be a driver issue that could result in those lows numbers for AMD CPUs in SLI and maybe get better with the release of a new driver?

Thank you much JTT283

hanhoffcustompcs said:
If seen drivers cause all kinds of problems! Its amazing what can happen with the wrong drivers. try the drivers for sure.


Yea, exactly. think this is probably an AMD thing though. maybe related to their new bulldozer CPU series
Homebuilt system Authority

Drivers (from either nVidia or AMD/ATi) can be problematic, especially new ones. Tom's did an article a while back where SLI on an AMD mobo (chipset was 750i iirc) did not perform anywhere near as well as SLI on an Intel board (X58? I forget). The article did not address possible causes, but it certainly looked like a CPU issue.
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