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Product comparison · 2 pcs/workstations

HP Pavilion a6540.nl Desktop PC vs HP Pavilion a6551.nl Desktop PC

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  • 96specifications compared
  • 19differ
  • 77identical
  • 4known for one product only

Key differences

  • Processor family
    • Intel® Core™2 Duo
    • Intel® Core™2 Quad
  • Processor model
    • E7200
    • Q6600
  • Processor cores
    • 2
    • 4
  • Processor threads
    • 2
    • 4
  • Processor frequency
    • 2.53 GHz
    • 2.4 GHz
  • Processor cache
    • 3 MB
    • 8 MB
  • Processor lithography
    • 45 nm
    • 65 nm
  • Processor codename
    • Wolfdale
    • Kentsfield

Side by side

Differences highlightedShow differences only
100 specifications
A

HP

Pavilion a6540.nl Desktop PCView product
B

HP

Pavilion a6551.nl Desktop PCView product
Processor15 differ
Processor manufacturerIntelIntel
Processor familyDiffersIntel® Core™2 DuoIntel® Core™2 Quad
Processor modelDiffersE7200Q6600
Processor coresDiffers24
Processor threadsDiffers24
Processor frequencyDiffers2.53 GHz2.4 GHz
Processor cacheDiffers3 MB8 MB
Processor cache typeL2L2
Processor front side bus1066 MHz1066 MHz
Bus typeFSBFSB
FSB ParityNoNo
Processor lithographyDiffers45 nm65 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Core 2 Duo E7000 SeriesIntel Core 2 Quad Q6000 Series
Processor codenameDiffersWolfdaleKentsfield
Thermal Design Power (TDP)Differs65 W95, 105
TcaseDiffers74.1 °CB3=62.2; G0=71
Processor socketLGA 775 (Socket T)LGA 775 (Socket T)
Number of Processing Die TransistorsDiffers228 M582 M
Processing Die sizeDiffers82 mm²286 mm²
CPU multiplier (bus/core ratio)Differs9.59
SteppingDiffersM0G0
ECC supported by processorNoNo
Processor core voltage (AC)Known for one0.85 - 1.5 V
Memoryidentical
Internal memory3 GB3 GB
Maximum internal memory8 GB8 GB
Internal memory typeDDR2-SDRAMDDR2-SDRAM
Storageidentical
Total storage capacity640 GB640 GB
HDD speed7200 RPM7200 RPM
Card reader integratedYesYes
Compatible memory cardsMMC, SD, SmartMediaMMC, SD, SmartMedia
Storage drive controllerSATA 3.0Gb/sSATA 3.0Gb/s
Graphics1 differ
Discrete graphics card modelDiffersNVIDIA® GeForce® 8500 GTNVIDIA® GeForce® 9500 GS
Discrete graphics card memory0.512 GB0.512 GB
On-board graphics card modelKnown for oneNot available
Graphics card familyNVIDIANVIDIA
Performanceidentical
Product typePCPC
Optical driveidentical
LightScribeYesYes
Networkidentical
Networking features10/100/1000 Base-T10/100/1000 Base-T
Ports & interfacesidentical
USB 2.0 ports quantity66
HDMI ports quantity11
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantity11
DVI portYesYes
PS/2 ports quantity22
Firewire (IEEE 1394) ports11
S/PDIF out portYesYes
TV-outKnown for oneYes
TV-out typeKnown for oneS-Video
Serial ports quantity00
Parallel ports quantity00
Expansion slotsidentical
PCI Express x1 slots22
PCI Express x16 slots11
Expansion slots1 x PCI1 x PCI
Poweridentical
Power consumption (typical)300 W300 W
Designidentical
Chassis typeDesktopDesktop
Country of originChinaChina
Softwareidentical
Operating system installedWindows Vista Home PremiumWindows Vista Home Premium
Displayidentical
Display includedNoNo
Processor special features3 differ
Embedded options availableNoNo
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyNoNo
Intel Demand Based SwitchingNoNo
Intel Dual Display Capable TechnologyNoNo
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyNoNo
Intel Fast Memory AccessNoNo
Intel Flex Memory AccessNoNo
Intel Rapid Storage TechnologyNoNo
Intel Trusted Execution TechnologyNoNo
Intel VT-x with Extended Page Tables (EPT)NoNo
Intel Virtualization Technology (VT-x)DiffersNoYes
Intel Virtualization Technology for Directed I/O (VT-d)NoNo
Intel® AES New Instructions (Intel® AES-NI)NoNo
Intel® Clear Video HD Technology (Intel® CVT HD)NoNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)NoNo
Intel® InTru™ 3D TechnologyNoNo
Intel® Insider™NoNo
Intel® Wireless Display (Intel® WiDi)NoNo
Processor ARK IDDiffers3534829765
Processor package sizeDiffers37.5 mm37.5 x 37.5 mm
Thermal Monitoring TechnologiesYesYes
Intel® Turbo Boost TechnologyNoNo
Intel® Hyper Threading Technology (Intel® HT Technology)NoNo
Intel® Quick Sync Video TechnologyNoNo
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Audioidentical
Audio systemHDHD
Weight & dimensionsidentical
Width175 mm175 mm
Depth414 mm414 mm
Height387 mm387 mm
Weight9.6 kg9.6 kg
Packaging dataidentical
Package dimensions (WxDxH)498 x 599 x 245 mm498 x 599 x 245 mm
Package weight14 kg14 kg

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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