Product comparison · 2 pcs/workstations

Dell Optiplex 790 MTV vs Dell OptiPlex 990 USFF

140specifications compared
17differ
123identical
7known for one product only

Key differences

The Dell OptiPlex 990 USFF has 70 GB more total storage capacity than the Dell Optiplex 790 MTV (320 GB vs 250 GB). The Dell OptiPlex 990 USFF has 70 GB more HDD capacity than the Dell Optiplex 790 MTV (320 GB vs 250 GB). The Dell Optiplex 790 MTV has 1,800 RPM more HDD speed than the Dell OptiPlex 990 USFF (7200 RPM vs 5400 RPM). HDD interface: SATA on the Dell Optiplex 790 MTV, SATA II on the Dell OptiPlex 990 USFF. Motherboard chipset: Intel® Q65 Express on the Dell Optiplex 790 MTV, Intel® Q67 Express on the Dell OptiPlex 990 USFF.

Total storage capacity
- Optiplex 790 MTV:250 GB
- OptiPlex 990 USFF:320 GB
HDD capacity
- Optiplex 790 MTV:250 GB
- OptiPlex 990 USFF:320 GB
HDD interface
- Optiplex 790 MTV:SATA
- OptiPlex 990 USFF:SATA II
HDD speed
- Optiplex 790 MTV:7200 RPM
- OptiPlex 990 USFF:5400 RPM
HDD size
- Optiplex 790 MTV:3.5"
- OptiPlex 990 USFF:2.5"
Motherboard chipset
- Optiplex 790 MTV:Intel® Q65 Express
- OptiPlex 990 USFF:Intel® Q67 Express
USB 2.0 ports quantity
- Optiplex 790 MTV:10
- OptiPlex 990 USFF:7
Number of 3.5" bays
- Optiplex 790 MTV:2
- OptiPlex 990 USFF:1

Side by side

Differences highlightedShow differences only

Comparison of Optiplex 790 MTV, OptiPlex 990 USFF
147 specifications	A Dell Optiplex 790 MTV View product	B Dell OptiPlex 990 USFF View product
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i3	Intel® Core™ i3
Processor generation	2nd gen Intel® Core™ i3	2nd gen Intel® Core™ i3
Processor model	i3-2120	i3-2120
Processor cores	2	2
Processor threads	4	4
Processor frequency	3.3 GHz	3.3 GHz
Processor cache	3 MB	3 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 series	Intel Core i3-2100 Desktop Series	Intel Core i3-2100 Desktop Series
Processor codename	Sandy Bridge	Sandy Bridge
Thermal Design Power (TDP)	65 W	65 W
Tcase	69.1 °C	69.1 °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)	33	33
Maximum number of SMP processors	1	1
Platform	PC	PC
Maximum internal memory supported by processor	32 GB	32 GB
Memory types supported by processor	DDR3 1066/1333	DDR3 1066/1333
Memory bandwidth supported by processor (max)	21 GB/s	21 GB/s
ECC supported by processor	No	No
Memoryidentical
Internal memory	2 GB	2 GB
Maximum internal memory	16 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)	1 x 2 GB	1 x 2 GB
Memory slotsKnown for one	4x DIMM	Unknown — not stated by the source
Memory clock speed	1333 MHz	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storage5 differ
Total storage capacityDiffers	250 GB	320 GB
Optical drive type	No	No
Number of HDDs installed	1	1
HDD capacityDiffers	250 GB	320 GB
HDD interfaceDiffers	SATA	SATA II
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
Graphicsidentical
On-board graphics card	Yes	Yes
Discrete graphics card model	Not available	Not available
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)	1100 MHz	1100 MHz
On-board graphics card ID	0x102	0x102
Graphics card family	Intel	Intel
Performance1 differ
Product type	PC	PC
Motherboard chipsetDiffers	Intel® Q65 Express	Intel® Q67 Express
Password protection typeKnown for one	Unknown — not stated by the source	BIOS
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Copper ethernet cabling technology	1000BASE-T, 1000BASE-TX, 100BASE-T, 100BASE-TX, 10BASE-T	1000BASE-T, 1000BASE-TX, 100BASE-T, 100BASE-TX, 10BASE-T
Ethernet interface type	Gigabit Ethernet	Gigabit Ethernet
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	10	7
DisplayPorts quantity	1	1
HDMI ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Line-out	Yes	Yes
Line-in	Yes	Yes
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI port	No	No
PS/2 ports quantity	2	2
Firewire (IEEE 1394) ports	0	0
Serial ports quantity	1	1
Expansion slots1 differ
Number of 3.5" baysDiffers	2	1
PCI Express x1 slotsKnown for one	1	Unknown — not stated by the source
PCI Express x16 slotsKnown for one	2	Unknown — not stated by the source
PCI slotsKnown for one	1	Unknown — not stated by the source
Mini PCI Express slotsKnown for one	Unknown — not stated by the source	1
Power1 differ
Power supplyDiffers	265 W	200 W
Power supply input voltage	220 - 240 V	220 - 240 V
Design2 differ
Chassis typeDiffers	Mini Tower	USFF
Number of 5.25" baysDiffers	2	1
Product colour	Black, Silver	Black, Silver
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Software1 differ
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architectureDiffers	32-bit	64-bit
Compatible operating systems	Windows 7	Windows 7
Mac compatibility	No	No
Displayidentical
Display included	Yes	Yes
Display diagonal	43.2 cm (17")	43.2 cm (17")
Display resolution	1280 x 1024 pixels	1280 x 1024 pixels
Native aspect ratio	5:4	5:4
Contrast ratio (typical)	800:1	800:1
Display number of colours	16.78 million colours	16.78 million colours
Touchscreen	No	No
Display brightness	250 cd/m²	250 cd/m²
Viewing angle, horizontal	160°	160°
Viewing angle, vertical	160°	160°
Processor special featuresidentical
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	No	No
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)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
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 ID	53426	53426
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	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	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
Audioidentical
Audio system	HD	HD
Weight & dimensions5 differ
WidthDiffers	175 mm	65 mm
DepthDiffers	417 mm	240 mm
HeightDiffers	360 mm	237 mm
WeightDiffers	8.87 kg	3.27 kg
Dimensions (WxDxH)Differs	175 x 417 x 360 mm	65 x 240 x 237 mm
Packaging contentidentical
Mouse included	Yes	Yes
Keyboard included	Yes	Yes
Certificatesidentical
Compliance certificates	RoHS	RoHS
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Certification	CECP, TCO 05, WEEE, Blue Angel	CECP, TCO 05, WEEE, Blue Angel
Sustainabilityidentical
Sustainability certificates	EPEAT Gold, 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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