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post #21 of 55
The HD6850 is approximately half the performance of an R9 270.

Go check your CPU usage in your "tests." If you're peaking over 50% on any core, then you would probably have a CPU bottleneck on the R9 270. (The fx-6300 at stock clocks with turbo enabled should have similar performance as your OCed 4170 in these types of workloads)

You can also use your HD6850 as a sort of reference to determine whether or not the R9 270 will be enough gumption for the high resolution you want to run at. Try running the games at the settings you want on that and see what sort of FPS you get. If you can maintain 60FPS at settings you want on the HD6850 with a 1080P monitor, then you can probably expect that an R9 270-280X territory GPU will come close to achieving similar FPS on a 3x1080
Edited by mdocod - 3/4/14 at 6:37pm
     
CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
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Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
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Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
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yes CM Seidon 120V SolydK OpenSuse 13.1 
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Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
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CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
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Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
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post #22 of 55
Thread Starter 
Quote:
Originally Posted by mdocod View Post

The HD6850 is approximately half the performance of an R9 270.

Go check your CPU usage in your "tests." If you're peaking over 50% on any core, then you would probably have a CPU bottleneck on the R9 270. (The fx-6300 at stock clocks with turbo enabled should have similar performance as your OCed 4170 in these types of workloads)

I'm aware the FX-6300 should have similar performance to an FX-4170 due to only 2 threads being worked on, as is the nature of DX9. I would have gone with the FX-4300, but $10 more for a 6-core (3 module) is a no-brainer.

I definitely would consider going with an i5-4670k and Z87 if the possibility of an FX-6300 holding back a 760 / 770 exists. In the end of the day, its the sponsor's money, not mine. They can decide whether they want to pay the price for an ideal setup or not.
post #23 of 55
Thread Starter 
Quote:
Originally Posted by mdocod View Post

You can also use your HD6850 as a sort of reference to determine whether or not the R9 270 will be enough gumption for the high resolution you want to run at. Try running the games at the settings you want on that and see what sort of FPS you get. If you can maintain 60FPS at settings you want on the HD6850 with a 1080P monitor, then you can probably expect that an R9 270-280X territory GPU will come close to achieving similar FPS on a 3x1080

Yep, sounds good! The 6850 is well able to maintain 60+ FPS on a single monitor. Looks like I'm going for the GTX 760 or 770.
post #24 of 55
check cpu usage while testing
     
CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
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yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
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A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
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Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
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CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
Sticky ATNG Rosewill Green 630W NZXT Gamma Basic Microsoft corded 
CPUMotherboardGraphicsRAM
A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
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Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
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post #25 of 55
Thread Starter 
Quote:
Originally Posted by mdocod View Post

check cpu usage while testing

Alright, entered a few practice sessions with the guys, did a few laps, here's what Task Manager and MSI Afterburner recorded:

VSync off, no FPS limit:
GPU usage 100%
CPU usage 35% - 45%
FPS 150 - 200

The following is what I use personally, and what I plan to use on the new build:

Dynamic / Adaptive Vsync, so locked to 60FPS
GPU usage 35% - 40%
CPU usage 10% - 20%
post #26 of 55
May be fine on less hardware than I thought. Though 35-45% can mean a lot of different things on a quad core (1 core pegged?)
     
CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
Sticky ATNG Rosewill Green 630W NZXT Gamma Basic Microsoft corded 
CPUMotherboardGraphicsRAM
A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
Hard DriveOptical DriveCoolingOS
Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
MonitorKeyboardPowerCase
LG IPS224V-PN Logitec K360 FSP 400W Aurum S 80+ gold Prodigy 
Mouse
logitec M235 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
Sticky ATNG Rosewill Green 630W NZXT Gamma Basic Microsoft corded 
CPUMotherboardGraphicsRAM
A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
Hard DriveOptical DriveCoolingOS
Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
MonitorKeyboardPowerCase
LG IPS224V-PN Logitec K360 FSP 400W Aurum S 80+ gold Prodigy 
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logitec M235 
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post #27 of 55
Thread Starter 
No. Checked all cores in task manager, average of 40% across all cores.

I've contacted Michael Main from Main Performance PC regarding the CPU / GPU issue. He's the main guy behind custom-built PC's dedicated to iRacing. This is one of his builds here, the Turbo FX 6000. He used to have an FX-6300 in the build (as indicated by the name), but recently upped it to a 9370.

http://www.mainperformancepc.com/product/gaming-desktops/turbo-fx-6000-extreme-gamer/
post #28 of 55
Thread Starter 
Hi again guys,

I've modified the list for the build a bit. Largely unchanged, just a few cut-backs and discounts here and there to come up with something more cost-effective... could you please take another look at the parts below? I'm in no hurry to order, as I'll be working on building the DIY racing cockpit first. Will be sending off a spreadsheet of materials needed to build the cockpit soon.

AMD FX-6300
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113286

Gigabyte 970A-UD3P + G.Skill Sniper 2x4GB
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1573709

Alternative:Is there anything wrong with using 1.65V RAM? I know it can cause problems on Intel's memory controller... don't know about AMD.
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1573854

Sapphire R9 270 (placeholder). Waiting on R9 280, hoping prices stay reasonable
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202090

Western Digital 1TB Caviar Blue
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236339

EVGA 600 B
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438014

Rosewill Challenger:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153

Alternative: Worth going with Cooler Master HAF 912?
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119233

Leaving the system stock for now. I'm going to start overclocking it over the summer holidays. Could you please recommend a good CPU cooler? Will the Hyper 212 EVO handle 4.5Ghz? If not, please recommend CPU cooler? Should I opt for watercooling?

Thanks
post #29 of 55
Quote:
Originally Posted by Forde3654Eire View Post

Hi again guys,

I've modified the list for the build a bit. Largely unchanged, just a few cut-backs and discounts here and there to come up with something more cost-effective... could you please take another look at the parts below? I'm in no hurry to order, as I'll be working on building the DIY racing cockpit first. Will be sending off a spreadsheet of materials needed to build the cockpit soon.

AMD FX-6300
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113286

Gigabyte 970A-UD3P + G.Skill Sniper 2x4GB
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1573709

Alternative:Is there anything wrong with using 1.65V RAM? I know it can cause problems on Intel's memory controller... don't know about AMD.
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.1573854
Yes and no. The main problem with 1.65v RAM is that it get hotter (obviously), which puts added strain on the motherboard and RAM in terms of heat. And considering its only a $10 difference and having less heat will increase the lifespan of the RAM and motherboard, spend the extra $10.

Sapphire R9 270 (placeholder). Waiting on R9 280, hoping prices stay reasonable
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202090
For roughly $20 more, you can get a GTX 760 which is a more powerful card, http://www.newegg.com/Product/Product.aspx?Item=N82E16814125466 Your choice though. I wouldn't go for an R9 280 simply because it will be about the same price as a GTX 770 and be less powerful. (AMD cards simply aren't good value ATM, very unfortunate)

Western Digital 1TB Caviar Blue
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236339

EVGA 600 B
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438014
KILL IT WITH FIAR!!! Get a quality PSU, your using this rig for a few years, do NOT cheap out on the PSU.

Rosewill Challenger:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147153

Alternative: Worth going with Cooler Master HAF 912?
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119233
Again, yes and no.
It is nicer to build in, the parts will stay cooler, and its an overall better case, but thats only if you want to spend the extra $$$


Leaving the system stock for now. I'm going to start overclocking it over the summer holidays. Could you please recommend a good CPU cooler? Will the Hyper 212 EVO handle 4.5Ghz? If not, please recommend CPU cooler? Should I opt for watercooling?
A good budget CPU cooler is the 212 Evo, but I don't think it will do 4.5GHz (someone correct me if I'm wrong). IMO, better to go slightly overkill since you want this rig to last. I wouldn't go AIO watercooling on this, since its a long term rig. Take a look at the NZXT Havik 140. One of my favorite coolers, 140mm fans so its nice and quiet, and its at a relatively good price.

Thanks
My answers in bold.
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post #30 of 55
Thread Starter 
Thanks!

Alright I'll stick with the G.Skill Sniper RAM modules. After combo discount, they're only $4 more than the cheapest 1600 1.5V modules, Team RAM.

Gigabyte GTX 760 looking good at $250. The R9 270 / HD 7870 is borderline enough to run iRacing at maximum graphics preset at 5760x1080. But will 2GB VRAM be enough for 5760x1080 resolution spanning 3 monitors? On my own build (see sig-rig), MSI Afterburner reports 900MB VRAM usage on a single monitor at 1920x1080...

Are you sure about the EVGA 600 B? Tom's Hardware used the 500W version in their latest budget build, along with the i5-3470 and R9 280X. I, however, really like the Seasonic 550W the moderator advised here. Is there a non-modular version of it?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151119

As for the HAF 912: removable HDD cage, 8-pin CPU connector cut-out, thicker steel and very rigid body are well worth $15 more in my opinion.
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