Will 2 RX 480 8GB bottleneck a i5-6600k?

IHateSmurfs · Mar 10, 2017

I'm triying to do my first gaming PC and I would like to know if 2 RX480 8GB GAMING X from MSI will bottleneck my i5-660k. And a PSU to handle both. Thanks!

harrisjb78 · Mar 10, 2017

Depends on the game, resolution, and FPS you hope to achieve.

Can I ask why dual 480's instead of a 1070?

IHateSmurfs · Mar 10, 2017

I don't really like the 1070. Plus I can get x2 the VRAM at half the price. Tho the 1070 is great (I have a friend that has it alongside with the 6700k, i don't see the point of it). I want to game at 1080p (my gaming monitor res.), in GTA V, Hitman, Doom, CS:GO, Hired Ops, Line of Sight and tons of games. I would like to achieve FPS in the range of 100-200. Not that my "gaming monitor" is my LG LCD 1080P FHD @60Hz 5ms. And I just want them because my current PC is a Packard Bell TE69KB Series with the E1-2500 2Core Essentials 1.4GHz with a 8240HD iGPU 512mb. Crappy PC for what i want to do.

harrisjb78 · Mar 10, 2017

Okay just wondering.

The EVGA G2 and Seasonic G series are nice. 650w would do but I would go 750w.
What is your price range for the PSU?

IHateSmurfs · Mar 11, 2017

The problem is, I'm portuguese. You might need the following website to check PSU's
https://www.globaldata.pt/shop/fonte-de-alimentac-o.html

In the left side there are some filters. Max I can spend in a PSU would be probably 120/150€. If you use Translator, you can understand most of that website content. And I'll just get one RX for a while. When I have extra 250€ I'll get another. I already know what MoBo to use: MSI Z170A PC Mate. It only supports XFire so it's absolutely perfect for what I want. I'll also get MSI Gaming X RX480's with 8GB each. For me this is the perfect investment, because then I can embarass my friend. He's always like: <When you have 8GB GDDR5 come and talk with me>. I absolutely hate those comments. I might have a crap PC but if I had more money I would be the one saying that. Also I'm no AMD/NVIDIA fanboy, I just get what best. I'm still getting the money because my setting will cost around 1200/1400€.

BTW thanks for all the help dude!

harrisjb78 · Mar 11, 2017

https://www.globaldata.pt/shop/xfx/fonte-xfx-ts-650w-80-gold.html
https://www.globaldata.pt/shop/xfx/fonte-xfx-ts-750w-80-bronze.html
https://www.globaldata.pt/shop/seasonic/fonte-seasonic-m12ii-750w-evo-edition-80-bronze.html
https://www.globaldata.pt/shop/corsair/fonte-corsair-modular-rm750x-80-gold.html
https://www.globaldata.pt/shop/seasonic/fonte-semi-modular-seasonic-g-series-750w-80-gold.html

I have the m12ii, the G series is the newer Seasonic model. The XFX units are also really good as is the Corsair model I put.
I would no go for a different series Corsair (CX, CS).

sizzling · Mar 11, 2017

You don't get twice the VRAM. 2x480 8Gb's in crossfire will operate like an 8gb card, not 16gb. In crossfire VRAM does not add. I'd get a single stronger card and avoid all the problems of multi card setups and get much better performance in games that don't support crossfire or support it poorly.

harrisjb78 · Mar 11, 2017

He never said he would get 16Gb?

"<When you have 8GB GDDR5 come and talk with me>"

maxalge · Mar 11, 2017

harrisjb78 :

"I don't really like the 1070. Plus I can get x2 the VRAM at half the price. "

yes he did

maxalge · Mar 11, 2017

IHateSmurfs :

you are not going to get twice the vram

you dont add the amount from both cards together

CF = 8gb only

IHateSmurfs · Mar 13, 2017

I don't mean x2 the VRAM for games. I'm counting the total VRAM. C'mon. Everyone here knows simple maths, right? 8x2=16! Was it that hard? And yes, I know that I might have some problems with Dual Graphics Setup, and it won't bring any extra performance except for like 5-10fps extra. Besides, here in Portugal 2 RX480 8GB are cheaper than 1 single 1070. Please, next time before doing such comments, think twice. Like I said above, I'm counting with the total VRAM. Also I was thinking in obtaining a XFX XXX Edition 750W. But I saw some reviews and when it's in load, the ADDA fan spins at ~1650rpm. Is it too loud? Besides the noise it's a very good PSU. 2nd edit [OMFG]: BTW @harrisjb78 I like your 4th PSU choice. I might go with that one. Thanks for all the help. Tho I won't be choosing the correct answer yet. I might wait another 1/2 days to see. Thanks guys. Tomshardware rocks!

RobCrezz · Mar 13, 2017

Whats the point in counting the total vram when each card has to mirror the other? You still only get 8gb of usable space because of that.

But yeah the 6600k will bottleneck two rx 480 in crossfire, when they are working well in a game that supports crossfire.

IHateSmurfs · Mar 13, 2017

Dude so what should I get? Should I give you a link from the webpage I'll use to get the components?
If so here's the GPU shop link: https://www.globaldata.pt/shop/placas-graficas/pcie.html .
Max budget I have for GPU's is 300/400€. Keep that in mind. I'll be on so when you have an answer for me, it me up.

RobCrezz · Mar 13, 2017

Single RX 480 8gb or 1060 6gb

maxalge · Mar 13, 2017

IHateSmurfs :

it's not simple math when you dont add up vram

with dual 8gb cards in CF all you get is 8gb TOTAL

next time you make such comments do some research and think twice before you try to sound like you know what you are talking about

IHateSmurfs · Mar 14, 2017

Please dude, are you dumb or what? I'M NOT SAYING THAT I WILL HAVE 16GB TOTAL FOR GAMING! I'M TRYING TO SAY THAT 2X8=16GB. I know I won't have 16gb available for gaming. C'mon. Rob here the 1060 6gb is ~370€. Do you recommend the RX or should I spend a little bit more to get the 1060?

RobCrezz · Mar 14, 2017

IHateSmurfs :

If its much cheaper, get the RX 480 8gb, performance is basically the same between the two.

IHateSmurfs · Mar 14, 2017

Ok. Then when I have 350€ I can upgrade to a 6700k and then with some extra cash buy another RX480. Thanks for the help. BTW you got my logic up there?

RobCrezz · Mar 14, 2017

Yeah that should be fine.

No not really, you wrote it as you were getting 2x the vram at half the price, which has caused the confusion for everyone, because thats not a benefit as each cards vram has to be mirrored to the other, so you only really get 8gb usable.

IHateSmurfs · Mar 17, 2017

Ok thanks. I'm going with a RX480 8GB for a while and when I get some extra money i'll throw in an i7-6700k plus another RX.

Juho_1 · Apr 7, 2017

harrisjb78 :

Because 2 rx 480 is as powerful as 1080... And its cheaper than single 1070... educate yourself pls.... And btw nowadays more games will support Crossfire and AMD has gotten really much better with drivers so...

IHateSmurfs · Apr 12, 2017

Yeah Vulkan optimization from spaghetti code to +35% performance in DOOM is another job well done by AMD. Way to go. #RedTeam #NotAMDFanboy

Juho_1 · Apr 19, 2017

IHateSmurfs :

Can i ask you why 6700k and not Ryzen 5 1600x? 1600x has 2 cores and 4 threads more and much faster multicore performance and it's much cheaper. Single-core speed is little bit better than Intel due to last BIOS updates and due to BIOS updates Ryzen has become very stable. Ryzen's gaming performance raised over 30% in first optimized game and it passed Intel. #RedTeam #Not_AMD_Fanboy_But_I'm_a_Realist_

IHateSmurfs · Apr 24, 2017

Yeah I'm updating it mate.
-AMD Ryzen R5-1600X/Regular (IDK what to choose);
-KINGSTON HYPERX FURY 8GB 2400MHZ DDR4;
-MSI B350 TOMAHAWK;
-RX480 ASUS ROG STRIX 8GB;
-SEASONIC S12II;
-CM MASTERLIQUID 240 LIQUID COOLER;
-WD CAVIAR BLUE 1TB 64MB 7200RPM.

This will be my final build (I think).

Juho_1 · Apr 25, 2017

Looks good! I would maybe throw couple bucks more and upgrade Ram to 2666mhz cause Ryzen benefits really much from from the Ram. But otherwise looks very good!

Will 2 RX 480 8GB bottleneck a i5-6600k?

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