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Bottleneck Questions

post #1 of 5
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Hi guys, i was told today that the main bottleneck in any PC is the HDD? I didnt even think about this? I always considered it to be the CPU? Anyway, what actually causes the HDD to bottleneck? Is the GPU setup one thing? Or is it what the OS is installed on such as a HDD or SDD etc....

One reason i ask is because i currently have two SATA II HDDs and am upgrading to 2 gtx 3GB 580's in SLI. Im also reinstalling the OS onto a 60GB SSD. So would i have any bottleneck issues? If someone did have HDD bottlneck issues, would reinstalling the OS onto a faster drive solve it? Sorry, i'm not sure how this works lol.

Thanks!
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My Rig
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post #2 of 5
Something is always going to be the bottleneck of your system, but to a certain extent, you get to a point where you really don't notice it. If you are going to be running an SSD with SLI 3 GB 580's, i'd definately look to your CPU as the bottleneck at this point. That doesnt mean that you will notice it or need to upgrade it, but it may be the slowest component in your PC. Just be sure to get a good SSD and not cheap out.
post #3 of 5
If you are referring to gaming then it will not bottleneck your fps just your loading times. Once it is loaded, you hdd is not affecting your fps.
post #4 of 5
It depends on what you are doing. When you're booting into windows, all those files need to be read off your hard drive and loaded into memory before you can actually do anything. In that instance the hard drive is your bottleneck; as well as any time you are starting a program or loading in a game. When someone says the hard drive is your biggest bottleneck, they mean that during normal use (i.e. not gaming) the only thing that gets pushed to the max very often is your hard drive which means it's what's slowing down your overall experience.

When you're gaming, once everything's loaded up the hard drive will have almost no impact on your framerate. That's determined almost entirely by your video card and CPU.

You'll love the SSD, it'll make your computer feel super fast. And the 580s will make gaming awesome too; have fun!
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Kathis
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OCZ Vertex 4 ~ 4 terabytes across 3 drives, not in RAID. 2 ... Water cooled, aquaero 5 LT controller/temp monitor Win7 x64 
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Acer 23.3", 1920x1080 Acer 19", 1440x900 CM Storm Quickfire 700W Cooler Master Silent Pro 
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post #5 of 5
lol the reason for thought it was the CPU is becasue of all the GPU bottlenecker fear mongers on this site!

Easy w ay to think about it- All parts of your computer talk to each other over a bus... the speed or bandwidth they communicate with is the most important thing. Therefore the slowest component in a computers system is the "bottleneck" Since a hardrives' transfer speed is measured in MB per second, not GB like other busses, it is obvious who the weakest link is!
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Sweaty Box
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Stacker T01 v5.0
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Sturbin' Box
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CPUMotherboardGraphicsRAM
i7 5960X ASUS Rampage V Extreme 2x Nvidia 1080ti SLI 32GB Corsair Dominator DDR4 3400Mhz 
Hard DriveCoolingOSMonitor
Samsung 850 pro NVMe M.2 Custom EK watercooled loop Windows 10 Pro Triple LG 4K 27" 
PowerCase
Cosair 1500Ti CaseLabs M10 
CPUMotherboardGraphicsRAM
Delidded i7 3770K @ 5Ghz ASUS Maximus V Gene EVGA GTX 670 SLI - Heatkiller Blocks 16GB Corsair Vengeance DDR3 @ 2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 840 EVO Custom Loop - EK Supreme HF Windows 7 Pro 64-bit Dell 30" + 2 x Dell 24" 
PowerCase
Sparkle Gold 1200W CM Stacker T01 
CPUMotherboardGraphicsRAM
Phenom II X6 1055T @4.0GHz (308x13) / 3.08GHz NB ASUS Crosshair IV Formula w/EK full coverage block ATI 5870x2 Crossfired @ 950/1250 8GB Corsair Vengeance DDR3 1600 
Hard DriveCoolingOSMonitor
OCZ Vertex 3 SSD Swifttech Apogee Drive Block/Pump Windows 7 64bit Pro ASUS 27" LCD 
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