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Question about CPUs


Posts
40
#1
I was taking a look at some parts for a build I might be making soon, and the CPU I was looking at was an Intel Core i7-4790K. One very interesting thing I noticed was that Intel's ARK processor page stated that this 4.4GHz quad-core 8MB cache CPU cost $330 - while the 3.1GHz dual-core 4MB cache i7-4510U in my current laptop was shown as $390 on Intel's same ARK page.

So I'm wondering, why does this worse performing 4510U cost considerably more than the higher performing 4790K?
 

My Computer

System One

  • OS
    Windows 8.1 64-bit
    Computer type
    Laptop
    CPU
    Intel Core i7 4510U
    Memory
    8GB
    Graphics Card(s)
    NVIDIA GeForce GT 840M (primary), Intel HD 4400 (secondary)
    Hard Drives
    1TB
    Keyboard
    Some wired Acer thing
    Mouse
    Logitech G302 Daedalus Prime
    Browser
    Google Chrome
    Antivirus
    AVG Free 2015

theveterans

New Member
Member
Posts
179
#2
It's a lot harder to make a low voltage CPU that can go up to 3.1 GHz stable.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64 with Media Center
    Computer type
    Tablet
    System Manufacturer/Model
    Surface Pro 3
    CPU
    Core i5 4300U @ 1.9 GHz
    Motherboard
    Surface Pro 3
    Memory
    8092 MB DDR3-L 1.35 V SDRAM @ 1600 MHz
    Graphics Card(s)
    Intel HD 4400 @ 200 MHz
    Sound Card
    Realtek HD Audio
    Monitor(s) Displays
    Built-in 3:2 display
    Screen Resolution
    2160 x 1440
    Hard Drives
    256 GB SSD + 128 GB micro SD
    PSU
    36 Watt power brick
    Cooling
    Active
    Keyboard
    On Screen Keyboard
    Mouse
    Surface pen
    Internet Speed
    300 / 20 TWC
    Browser
    IE 11 Metro, IE 11 Desktop
    Antivirus
    Windows Defender

popeye

New Member
VIP Member
Guru
United States

Posts
3,090
#3
Yep, a desktop CPU versus a laptop CPU. A bit like comparing apples to oranges.
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model
    Acer V3 771G-6443
    CPU
    i5-3230m
    Motherboard
    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
    Screen Resolution
    1600x900 pixels
    Hard Drives
    Samsung SSD 850 EVO 250 GB
    ADATA SSD SP900 128GB
    PSU
    90 watt brick
    Mouse
    Bluetooth
    Antivirus
    Comodo
    Other Info
    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.

LMiller7

Active Member
Pro User
Posts
704
#4
Laptop and desktop CPUs are not the same and it is not possible to make direct price comparisons between them. It is essentially comparing apples and oranges. In a desktop CPU performance is a major priority and that is what you are paying for. Designing and building a CPU that must operate under the severe constraints of a laptop is something entirely different. As enormous amount of effort has gone into building such a CPU with low power consumption yet still provides acceptable performance and can be sold at a reasonable price. This is far more difficult than most people imagine. The operating constraints of a desktop CPU are much less severe and it should not be surprising that you can get more performance for a lower cost.
 

My Computer

System One

  • OS
    Windows 7
    Computer type
    PC/Desktop

azasadny

Moved to ten*****s.com
VIP Member
Guru
#5
Good points made here!
 

My Computer

System One

  • OS
    Win 10 Pro 64bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built Intel i7-3770k-based system
    CPU
    Intel i7-3770k, Overclocked to 4.6GHz (46x100) with Corsair H110i GT cooler
    Motherboard
    ASRock Z77 OC Formula 2.30 BIOS
    Memory
    32GB DDR3 2133 Corsair Vengeance Pro
    Graphics Card(s)
    GeForce GTX 980ti SC ACS 6GB DDR5 by EVGA
    Sound Card
    Creative Sound Blaster X-Fi Titanium HD, Corsair SP2500 speakers and subwoofer
    Monitor(s) Displays
    LG 27EA33 [Monitor] (27.2"vis) HDMI
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung SSD 850 EVO 250GB (system drive)
    WD 6TB Red NAS hard drives x 2 in Storage Spaces (redundancy)
    PSU
    Corsair 750ax fully modular power supply with sleeved cables
    Case
    Corsair Air 540 with 7 x 140mm fans on front, rear and top panels
    Cooling
    Corsair H110i GT liquid cooled CPU with 4 x 140" Corsair SP "push-pull" and 3 x 140mm fans
    Keyboard
    Thermaltake Poseidon Z illuminated keyboard
    Mouse
    Corsair M65 wired
    Internet Speed
    85MBps DSL
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender, MalwareBytes Pro and CCleaner Pro
    Other Info
    Client of Windows Server 2012 R2 10 PC's, laptops and smartphones on the WLAN.

    1GBps Ethernet ports

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