Product comparison · 2 pcs/workstations

Dell 790 SF vs Dell OptiPlex 990 MT

132specifications compared
29differ
103identical
6known for one product only

Key differences

The Dell OptiPlex 990 MT has 2 more processor cores than the Dell 790 SF (4 vs 2). The Dell OptiPlex 990 MT has 3 MB more processor cache than the Dell 790 SF (6 MB vs 3 MB). The Dell OptiPlex 990 MT has 3.5°C more tcase than the Dell 790 SF (72.6 °C vs 69.1 °C). Only the Dell OptiPlex 990 MT has embedded options available. Only the Dell OptiPlex 990 MT has Intel Trusted Execution Technology.

Processor family
- 790 SF:Intel® Core™ i3
- OptiPlex 990 MT:Intel® Core™ i5
Processor generation
- 790 SF:2nd gen Intel® Core™ i3
- OptiPlex 990 MT:2nd gen Intel® Core™ i5
Processor model
- 790 SF:i3-2100
- OptiPlex 990 MT:i5-2400
Processor cores
- 790 SF:2
- OptiPlex 990 MT:4
Processor cache
- 790 SF:3 MB
- OptiPlex 990 MT:6 MB
Thermal Design Power (TDP)
- 790 SF:35, 65
- OptiPlex 990 MT:95 W
Tcase
- 790 SF:69.1 °C
- OptiPlex 990 MT:72.6 °C
Internal memory
- 790 SF:2 GB
- OptiPlex 990 MT:4 GB

Side by side

Differences highlightedShow differences only

Comparison of 790 SF, OptiPlex 990 MT
138 specifications	A Dell 790 SF View product	B Dell OptiPlex 990 MT View product
Processor8 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i3	2nd gen Intel® Core™ i5
Processor modelDiffers	i3-2100	i5-2400
Processor coresDiffers	2	4
Processor threads	4	4
Processor frequency	3.1 GHz	3.1 GHz
Processor cacheDiffers	3 MB	6 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 i3-2100 Desktop Series	Intel Core i5-2400 Desktop Series
Processor codename	Sandy Bridge	Sandy Bridge
Thermal Design Power (TDP)Differs	35, 65	95 W
TcaseDiffers	69.1 °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)	31	31
Maximum number of SMP processors	1	1
Platform	PC	PC
SteppingKnown for one	Q0	Unknown — not stated by the source
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
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.4 GHz
Memory2 differ
Internal memoryDiffers	2 GB	4 GB
Maximum internal memory	16 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	1 x 2 GB	2 x 2 GB
Memory slots	4x DIMM	4x DIMM
Memory clock speed	1333 MHz	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storage2 differ
Total storage capacityDiffers	250 GB	500 GB
Optical drive type	DVD-RW	DVD-RW
Number of HDDs installed	1	1
HDD capacityKnown for one	250 GB	Unknown — not stated by the source
HDD interfaceDiffers	SATA	SATA II
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Card reader integrated	No	No
Floppy drive installed	No	No
Graphics1 differ
On-board graphics card	Yes	Yes
Discrete graphics card modelDiffers	Not available	Intel® HD Graphics 2000
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 type	BIOS	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)
Wi-Fi	No	No
Wake-on-LAN ready	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity	10	10
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
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
Parallel ports quantity	0	0
Expansion slots1 differ
Number of 3.5" baysDiffers	1	2
PCI Express x16 slots	2	2
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	1
PCI slotsKnown for one	Unknown — not stated by the source	1
Power1 differ
Power supply type	AC/DC	AC/DC
Power supplyDiffers	240 W	265 W
Design2 differ
Chassis typeDiffers	SFF	Mini Tower
Number of 5.25" baysDiffers	1	2
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Product colour	Black, Silver	Black, Silver
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Displayidentical
Display included	No	No
Processor special features7 differ
CPU configuration (max)	1	1
Embedded options availableDiffers	No	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 TechnologyDiffers	No	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)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	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	53422	52207
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 TechnologyDiffers	No	2.0
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
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 & dimensions4 differ
WidthDiffers	92.6 mm	175 mm
DepthDiffers	312 mm	417 mm
HeightDiffers	290 mm	360 mm
WeightDiffers	5.7 kg	8.87 kg
Packaging contentidentical
Mouse included	No	No
Keyboard included	No	No
Certificatesidentical
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab

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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