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Bottlenecking...?

post #1 of 4
Thread Starter 
Will my Fx8350 bottle neck my R9 390 cpu is running at 4.2Ghz i as well have a corsair h60

cheers!!
post #2 of 4
Depends on the game. On optimized games you won't feel any bottleneck. On crap optimized games, yes, it will bottleneck. You need more single-thread performance.
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My Rig
(14 items)
 
Ex-wife's Rig
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
OSMonitorKeyboardPower
Windows 7 Pro x64 Toshiba 32" FullHD TV Logitech FSP Hexa 550 
CaseMouse
DeLUX Logitech 
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post #3 of 4
Yes and No !

First off, always make sure that your GPU is the limit factor. That means crank up visual settings in games and desktop resolution, do not use anything lower than 1080p with your R9 390 in games.

You will be fine.

However, some games that use old crap engines like Arma III, World Of Tanks, etc, or even really old games like Crysis 1, only run in Single/Dual Thread. In those games you will lose some performance, my guess about 40~50% in the worst scenario.

In my case i do have old single Thread games, like RFactor, GTR2, Crysis 1, Killing Floor, FarCry1, but even so my R9 280X O.C + FX-8350 just does the job.

Does my FX-8350 bottleneck my R9 280X in very old games? Yes it does. What the clock i need to run 100% GPU in old games like Crysis 1 for example?

About 5.0 Ghz as you can see below.



Does that mean i cannot run Crysis 1 with a stock FX-8350? No, i play Crysis 1 perfecly fine even with the GPU at 70~80% load.

My suggestion to you is play at 1440p, and if the game runs smooth, dont bother with bottleneck.

In modern multi thread games like Crysis 3, BF4, DOOM, FARCRY 4 the FX-8350 stock do not bottleneck the GPU.

This ScreenShot is with Crysis 3 and a stock FX-8350 + R9 280X. As you can seem no bottlenecks GPU always in 100% !



Good Luck !

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Edited by jclafi - 6/6/16 at 2:03pm
post #4 of 4
Low level API, Mantle, DX12 or Vulkan, plus an application that is multi threaded when it comes to working with the GPU will not be bottlenecked. In general though you will play on crappy Nvidia optimized 1-2 GPU threads games that like the single thread performance of Intel and Nvidia cards in DX11 and older.

If you want to upgrade your CPU either get a modern i5/i7 Intel or wait for Zen.
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