AMD FX Bottlenecking

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GetCrazeh

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Jan 22, 2013
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Hello,
I'm going to buy a pc but i was just wondering would this setup work good? Later on i would be planning on upgrading to two 680's but if the cpu would bottleneck the cards to much, what about with a 670 in sli? If there was a bottleneck issue would overclocking the CPU fix any of these problems?

CPU - AMD FX 6300 Six-Core - AM3+
GPU - Gigabyte nVidia GTX 680 2GB OC
RAM - Corsair 8GB (2x4GB) DDR3 1600MHz CL9 Vengeance
PSU - XFX ProSeries 850W Core Edition 80+ Bronze
Motherboard - Gigabyte GA-970A-D3 Mainboard - AM3+
HDD - 1TB Western Digital Caviar Black Hard Drive

Thanks.
 
Solution
stantheman123
I own a amd 6300 overclocked to 4.5ghz and a 7970ghz.

At stock clocks the 6300 bottlenecked my 7970ghz a bit. 75% gpu usage on battlefield 3 However once i overclocked it went away. Do not. i repeat. DO NOT get any high end sli/crossfire build with Amd cpus. i own one i KNOW. If it bottlenecked a single 7970ghz
and i had to overclock it to get rid of it. imagine what it would to 2 7970s/680s.

If you were going with a single 680 id be like yea sure just make sure your overclocking.

If you dont have the money for 2 680s+i5 3570k. get 2 670s.

Im not hating on amd. I wanted to support there cpus. And help them out in a rough time. But for someone like you i cannot recommended them. But as i see you choose the i5 3570.

Just...
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GetCrazeh

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Even with overclocking? If not, what cpu would you reccomend instead?
 
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Azn Cracker

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I updated the post if you didnt see it. The intel i5 3570k is a good choice and wont bottlenack anything. Of course you would need to choose a new motherboard. Also the motherboard you chose in your original build would not work for SLI anyways. It only supports 4x speeds when both of the pci-e slots are in use.
 
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GetCrazeh

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i was looking at that but it stretches my budget a bit, any other amd cpus that would bottleneck but are yet at a reasonable price?
 
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Azn Cracker

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Nope If you looked at the bench mark even the FX-8320 bottlenecks some games quite a bit. Instead of getting a gtx 680, get a 670 instead. Then put that money towards the intel cpu and motherboard. If you are planning on running SLI, make sure you choose a motherboard that can run at least (8x/8x) speeds when both pci-e slots are used otherwise you will see a bottleneck from your motherboard.

A question though, you are using the computer for gaming mainly right? Some programs like photoshop run well on the AMD cpus because of the high core counts.
 
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GetCrazeh

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I Will be doing mainly gaming but also some video edits and photo edits in after affects and photoshop. but mostly gaming. would this motherboard be good? ASRock Z77 Pro4 Intel Mainboard - LGA 1155
1 x PCI Express 3.0 x16 slot (PCIE2: x16 mode)
- 1 x PCI Express 2.0 x16 slot (PCIE3: x4 mode)
- 1 x PCI Express 2.0 x1 slot
- 3 x PCI slots
 
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Azn Cracker

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Nah not good if you want to SLI. only the first port will be running at full bandwidth. Your second one will run at 4x.

Try this one instead.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131837

Its $120 after rebate and coupon. Free shipping too! so its only a few bucks more in the end
 
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GetCrazeh

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http://www.centrecom.com.au/catalog/z77x-gigabyte-z77x-intel-mainboard-1155-p-57270.html?sort=3a would this motherboard still be alright? the first gpu would be at full speed and the second would be at 8x
1 x PCI Express x16 slot, running at x16 (PCIEX16)
(The PCIEX16 slot conforms to PCI Express 3.0 standard.)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
* The PCI Express x16 slot supports up to PCI Express 2.0 standard when an Intel 32nm (Sandy Bridge) CPU is installed.
1 x PCI Express x16 slot, running at x8 (PCIEX8)
* The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode.
 
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PanicMaster85

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ok here, this is my story

so i had the fx-8120 overclocked to 4.7ghz! and I had about a 30-40% bottleneck in bf3 with my single gtx 670... I then upgraded my system to the i5-3570k and a z77-extreme6 motherboard(recommend it by the way I really like it so far and has two 16x pci-e slots) and I now have no bottleneck(some at times but from what i dont know because i CPU does not his 100% usage at these times so i dont know...

anyways after installing the i5-3570k i relized that my 8120 was throttling so it went from 4.7 to 3.2 to 4.4 to etc etc it was crazy... I do not regret my purchase because i mostly only game and the 3570k alone with no overclock is about 30% faster or even more than teh 8120.... basically though make sure to see if your cpu is throttlin what you want to do is open core temp and run and cpu stress test if the CPU's speed goes around weirdly then you are throttling and im sure there is an answer, just check this and keep me posted

also the 6300 will be better than a i5 with video editing though not with gaming if you want cpu that is great in both get a i7-2600k or i7-3770k

Hope this helps :D
 
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GetCrazeh

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GetCrazeh

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Ok i have revised the build and here it is.
http://www.centrecom.com.au/catalog/gtx670-2gd5-asus-nvidia-dcii-p-58185.html?sort=3a
http://www.centrecom.com.au/catalog/850s-nlb9-proseries-850w-core-edition-bronze-p-55581.html
http://www.centrecom.com.au/catalog/vj40001w2z-thermaltake-p-34675.html
http://www.centrecom.com.au/catalog/bx80637i53570-intel-core-3570-1155-p-59090.html
http://www.centrecom.com.au/catalog/extreme4-asrock-extreme4-intel-mainboard-1155-p-57327.html

XFX ProSeries 850W Core Edition 80+ Bronze - $112.00
Thermaltake V9 - $99.00
Intel CPU Core i5 3570 - LGA 1155 - $205.00
ASRock Z77 Extreme4 Intel Mainboard - LGA 1155 - $135.00
Asus nVidia GTX 670 DCII - $453.00

And depending on money ill go for a second 670.
 
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Azn Cracker

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Do you not live in the US? The ASUS one I recommended before is $15 cheaper and has the same features
 
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Azn Cracker

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Yep loooks good to me. You still need a hard drive and RAM though. I recommend 8gb of RAM. Consider a small SSD (~64gb) if you have the budget for it. Very nice to put the OS on it and a few games. The boot times and load times will decrease by a lot. Good luck!
 
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GetCrazeh

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http://www.centrecom.com.au/catalog/extreme4-asrock-extreme4-intel-mainboard-1155-p-57328.html?sort=3a
there is this motherboard for $15 cheaper but basically the same features with less over clocking support but i can still oc a little bit. i already have a spare hdd and the 8gb of ram but the ram is just your basic 1600mhz 8gb. i have windows home premium 64bit with quite a few games
 
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PanicMaster85

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I like your build, the extreme4 when both sli run on 16x get your facts straight @cracker

as for the build I like it, though i would recommend going with a trusted PSU brand like corsair and also to get an ssd(only if teh load times matter it wont increase FPS really at all) and to get 8gbs of ram at 1866 get the g.skill sniper 1866 version
 
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GetCrazeh

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Um its a high speed drive with 64mb of cache so it will be faster than just a normal 7400rpm but i dont really see the point in ssd untill they go up in capacity and down in price. the ram i have is capable of being overclocked to that speed so thats something i will do. um for Australia that is one of the most trusted brands its reliable and it comes with a large warranty, so there isnt much of a problem there
 
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GetCrazeh

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haha yeah ill remember that,
 
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