Product comparison · 2 pcs/workstations

Dell OptiPlex 390 MT vs Dell OptiPlex 790 SFF

117specifications compared
28differ
89identical
10known for one product only

Key differences

The Dell OptiPlex 790 SFF has 4 more processor threads than the Dell OptiPlex 390 MT (8 vs 4). The Dell OptiPlex 790 SFF has 0.4 GHz more processor boost frequency than the Dell OptiPlex 390 MT (3.8 GHz vs 3.4 GHz). The Dell OptiPlex 790 SFF has 0.3 GHz more processor frequency than the Dell OptiPlex 390 MT (3.4 GHz vs 3.1 GHz). Only the Dell OptiPlex 790 SFF has Intel® Hyper Threading Technology (Intel® HT Technology). Processor family: Intel® Core™ i5 on the Dell OptiPlex 390 MT, Intel® Core™ i7 on the Dell OptiPlex 790 SFF.

Processor family
- OptiPlex 390 MT:Intel® Core™ i5
- OptiPlex 790 SFF:Intel® Core™ i7
Processor generation
- OptiPlex 390 MT:2nd gen Intel® Core™ i5
- OptiPlex 790 SFF:2nd gen Intel® Core™ i7
Processor model
- OptiPlex 390 MT:i5-2400
- OptiPlex 790 SFF:i7-2600
Processor threads
- OptiPlex 390 MT:4
- OptiPlex 790 SFF:8
Processor boost frequency
- OptiPlex 390 MT:3.4 GHz
- OptiPlex 790 SFF:3.8 GHz
Processor frequency
- OptiPlex 390 MT:3.1 GHz
- OptiPlex 790 SFF:3.4 GHz
Processor cache
- OptiPlex 390 MT:6 MB
- OptiPlex 790 SFF:8 MB
CPU multiplier (bus/core ratio)
- OptiPlex 390 MT:31
- OptiPlex 790 SFF:34

Side by side

Differences highlightedShow differences only

Comparison of OptiPlex 390 MT, OptiPlex 790 SFF
127 specifications	A Dell OptiPlex 390 MT View product	B Dell OptiPlex 790 SFF View product
Processor9 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i7
Processor generationDiffers	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i7
Processor modelDiffers	i5-2400	i7-2600
Processor cores	4	4
Processor threadsDiffers	4	8
Processor boost frequencyDiffers	3.4 GHz	3.8 GHz
Processor frequencyDiffers	3.1 GHz	3.4 GHz
Processor cacheDiffers	6 MB	8 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	DMI	DMI
FSB Parity	No	No
System bus rate	5 GT/s	5 GT/s
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i5-2400 Desktop Series	Intel Core i7-2600 Desktop Series
Processor codename	Sandy Bridge	Sandy Bridge
Thermal Design Power (TDP)	95 W	95 W
Tcase	72.6 °C	72.6 °C
Maximum number of PCI Express lanes	16	16
PCI Express slots version	2.0	2.0
Number of processors installed	1	1
Processor socket	LGA 1155 (Socket H2)	LGA 1155 (Socket H2)
CPU multiplier (bus/core ratio)Differs	31	34
SteppingKnown for one	Unknown — not stated by the source	D2
Maximum internal memory supported by processor	32 GB	32 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	1066,1333 MHz	1066,1333 MHz
Memory bandwidth supported by processor (max)	21 GB/s	21 GB/s
ECC supported by processor	No	No
Memory3 differ
Internal memory	4 GB	4 GB
Maximum internal memoryDiffers	8 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	1 x 4 GB	2 x 2 GB
Memory slotsDiffers	2x DIMM	4x DIMM
Memory clock speed	1333 MHz	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storage1 differ
Total storage capacity	500 GB	500 GB
Optical drive typeDiffers	DVD±RW	DVD-RW
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Card reader integrated	No	No
Graphics1 differ
On-board graphics card	Yes	Yes
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 2000	Intel® HD Graphics 2000
Number of displays supported (on-board graphics)	2	2
On-board graphics card base frequency	850 MHz	850 MHz
On-board graphics card dynamic frequency (max)Differs	1100 MHz	1350 MHz
On-board graphics card ID	0x102	0x102
Graphics card family	Intel	Intel
Performance1 differ
Product type	PC	PC
Motherboard chipsetDiffers	Intel® H61	Intel® Q65 Express
Password protection type	BIOS	BIOS
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data ratesKnown for one	Unknown — not stated by the source	10,100,1000 Mbit/s
Cabling technologyKnown for one	Unknown — not stated by the source	10/100/1000Base-T(X)
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Wi-FiKnown for one	No	Unknown — not stated by the source
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers	8	7
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
HDMI ports quantityDiffers	1	0
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	2	2
Line-out	Yes	Yes
Line-in	Yes	Yes
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) ports	0	0
Expansion slots1 differ
PCI Express x16 slotsDiffers	1	2
PCI Express x1 slotsKnown for one	3	Unknown — not stated by the source
Power1 differ
Power supplyDiffers	250 W	240 W
Design2 differ
Chassis typeDiffers	Mini Tower	SFF
Cable lock slot	Yes	Yes
Product colourDiffers	Black	Black, Silver
External drive baysKnown for one	2 x 5.25"	Unknown — not stated by the source
Internal drive baysKnown for one	2 x 3.5"	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Displayidentical
Display included	No	No
Processor special features2 differ
CPU configuration (max)	1	1
Embedded options available	Yes	Yes
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology version	1.00	1.00
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™	Yes	Yes
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK IDDiffers	52207	52213
Processor codeKnown for one	Unknown — not stated by the source	SR00B
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Weight & dimensions4 differ
WidthDiffers	175 mm	36.5 mm
DepthDiffers	360 mm	122 mm
HeightDiffers	417 mm	114.2 mm
WeightDiffers	8.87 kg	5.7 kg
Packaging contentidentical
Mouse included	No	No
Keyboard included	No	No
Certificatesidentical
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Sustainability1 differ
Sustainability certificatesDiffers	ENERGY STAR	EPEAT Gold, ENERGY STAR

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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