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CPU Freq explained

post #1 of 3
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If you are thinking about upgrading your system always remember that clock speeds ie; Ghz rating does not mean it is faster.

For example a Pentium 4 at 3.4Ghz is signinficantly slower than a Core 2 Duo E6600 because of completely different architecture. When buying a new CPU the only time a higher clock rate is faster than another given cpu is within it's own processor family. Also remember that large onboard L2 Caches and multiple cores makes quite a difference in overall performance. For example, going from slowest to fastest....

E6300 (2x 1024MB L2 Cache) 1.86Ghz Allendale
E6400 (2x 1024MB L2 Cache) 2.13Ghz Allendale
E6600 (2x 2048Mb L2 Cache) 2.40Ghz Conroe
E6700 (2x 2048Mb L2 Cache) 2.67Ghz Conroe
X6800 (2x 2048Mb L2 Cache) 2.93Ghz Conroe
QX6700 (4x 2048Mb L2 Cache) 2.66Ghz Kentsfield

As you can see even though the Kentsfield slightly lower on clock rate it is by far the faster CPU because it has 4 Cores as opposed to the X6800's 2 Cores.

When it comes to actually buying your h/w imo the best way to go is avoid the "Fastest CPU's" (unless of course your kinda rich). Because all 3 Conroes have the same architecture and L2 Caches as eachother, you can get more performance than that of the X6800 buy buying the E6600 for more than a 3rd of the price of an X6800, and put the rest of the money to quality ram or that sought after DX10 GPU.

If you have that HUGE budget and want the fastest money can buy go for the X6800 or QX6700 as this will allow the highest OC's with it's unlocked multipliers, but you'll still need kick ass ram to make the most of it and that DX10 GPU well......you get the idea, expensive.
 
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post #2 of 3
Quote:
Originally Posted by Mhill2029 View Post
As you can see even though the Kentsfield slightly lower on clock rate it is by far the faster CPU because it has 4 Cores as opposed to the X6800's 2 Cores.
That depends entirely upon the programs that are being used to make the comparison. As you know, not all programs are currently written to optimize more then a single core. While the QX6700 is fast, I think you would be hard pressed to show an actual improvement from the stock X6800 to the stock QX6700 in all but afew benchmarks. One thing can be said for sure though, the QX6700 is definitely more future proof.
post #3 of 3
Thread Starter 
Quote:
Originally Posted by tubnotub1 View Post
That depends entirely upon the programs that are being used to make the comparison. As you know, not all programs are currently written to optimize more then a single core. While the QX6700 is fast, I think you would be hard pressed to show an actual improvement from the stock X6800 to the stock QX6700 in all but afew benchmarks. One thing can be said for sure though, the QX6700 is definitely more future proof.
Very true, the only place where the QX6700 rains supreme over the X6800 at present is in video encoding/decoding software where all it's power is fully utilised. It doubles the performance of the X6800 in sheer horsepower. Other than that they currently perform almost the same.
 
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CPUMotherboardGraphicsRAM
i7-3930K (C2) @ (4.6Ghz) Asus Rampage IV Extreme X79 (Bios 3204) 3x EVGA GTX780Ti's SC Editions 32GB (4x8GB) G-Skill TridentX 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x 256GB OCZ Vertex 4's (RAID-0) 2x 2TB Seagate Barracuda 7200.14 64MB Cache Pioneer BDR-207DBK Blu-ray Writer Corsair H105 (Push/Pull) 
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro 512GB M.2 Nvme 2x 256GB Vertex 4 SSD (RAID-0) 2x 2TB Seagate Barracuda [Storage] Pioneer BDR-207DBK Blu-ray Writer 
CoolingOSMonitorPower
Corsair H105 (Push/Pull) Windows 10 Pro x64 2x 27" Asus PG278Q ROG Swift 144hz  Corsair AX1500i Digital ATX 80 Plus Titanium 
CaseAudio
Lian Li PC-O8WX ATX Cube Case Logitech Z906 5.1 Surround 
CPUMotherboardGraphicsRAM
i7-3930K (C2) @ (4.6Ghz) Asus Rampage IV Extreme X79 (Bios 3204) 3x EVGA GTX780Ti's SC Editions 32GB (4x8GB) G-Skill TridentX 2400Mhz 
Hard DriveHard DriveOptical DriveCooling
2x 256GB OCZ Vertex 4's (RAID-0) 2x 2TB Seagate Barracuda 7200.14 64MB Cache Pioneer BDR-207DBK Blu-ray Writer Corsair H105 (Push/Pull) 
OSMonitorPowerCase
Win7 Pro 64Bit & Win10 Pro 64Bit Asus ROG Swift (2560x1440 @144hz) Corsair AX1200 + Corsair RED sleeved cables Coolermaster Cosmos II Ultra 
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