Intel 8086 -2

It took a while to find a working 8086 system (got mine in an IBM 8530). Nowadays a working 8086 is getting scarce and most things that are being sold in the XT-class are 8088's.

The difference between the 8086 and 8088 is small; 8086 has an 16-bit external bus instead of 8-bit for the 8088. The 8088 is actually a cut-down version of the 8086 to reduce costs in motherboards. After all an 8-bit bus on a motherboard is cheaper. Internally both CPU's run at the same speed but accessing components on the external bus can be slightly faster on the 8086.

I always wondered how an 8086 would perform compared to a 8088. In general you barely notice any difference (a cheaper NEC V20 is even faster on the DOS-prompt). In the DOSBench benchmark the 8086 is slightly ahead on the 8088. See benchmarks below showing 8 points for 5MHz 8088, 16 points for an 8MHz 8088, 18 points for the 8MHz 8086 and 22 points for an 8MHz NEC V20. The TurboXT, with an 10MHz NEC V20, is in the lead with 27 points.

Specifications

Core / Codename
Clockfrequency
8MHz
Front Side Bus
8MHz
Multiplier
1x
vCore
5V
L1 cache
0KB
L2 cache
None
sSpec
N/A
Chip date
8935
Stepping
?
Socket
Transistor count
0.029
Condition
CPU only
Engineering sample?
No

Benchmarks

CPU (chipset) ChipTest RAM score
NG80386SX -20 (OPTi82C/0WS)
9.50
Am386 DX40 (MX83)
8.09
i386 SX25 (WDC ISA)
6.50
NG80386SX -20 (F82C836 16k)
5.71
i386 DX25-IV (OPTi)
5.71
80286 -12-N (Suntac ST62C/0WS)
5.69
CS80C286 -20 (Hedaka/1WS)
4.50
V 30 (IBM 8530)
1.88
8086 -2 (IBM 8530)
0.92
8088 -1-P (?)
0.72
8088 D (?)
0.37
CPU (chipset) DOSBench score
Pentium 100 (430VX)
21577.00
Pentium 90 (430VX)
19734.00
K5 PR166 (430VX)
16460.00
Am5x86 -P75 (UMC PCI)
16295.00
Pentium 75 (430VX)
16147.00
Pentium Overdrive 83 (UMC PCI)
15764.00
Kingston TC5x86 /133 (UMC PCI)
15189.00
Am486 DX4/120 (UMC PCI)
15091.00
Cx5x86 100GP (UMC PCI)
15022.00
K5 PR133 (430VX)
14360.00
Cx486DX4 100GP4 (UMC PCI)
14159.00
K5 PR100 (430VX)
13836.00
Pentium 60 (Hendrixx)
13487.00
Am486 DX4/100 (UMC PCI)
12677.00
K5 PR90 (430VX)
12567.00
i486 DX4/100 (UMC PCI)
12256.00
ST486DX2 80GS (UMC PCI)
11670.00
80486 80MHz (UMC PCI)
11670.00
Cx486DX2 80GP (UMC PCI)
11670.00
5k86 P75 (430VX)
10355.00
Am486 DX2/80 (UMC PCI)
10241.00
TI486DX2 G66 (UMC PCI)
9765.00
Cx486DX2 66 (UMC PCI)
9674.00
80486 66MHz (UMC PCI)
9673.00
i486 DX2/66 (UMC PCI)
8727.00
Am486 DX2/66 (UMC PCI)
8613.00
DX20ODPR 66 (UMC PCI)
8519.00
i486 DX2/66 (UMC PCI)
8519.00
Am486 DX2/50 (UMC PCI)
6592.00
DX2ODP 50 (UMC PCI)
6590.00
ODP486SX 25 (UMC PCI)
6590.00
i486 DX2/50 (UMC PCI)
6590.00
i486 DX50 (UMC PCI)
6577.00
Cx486DX 40GP (UMC PCI)
5370.00
Cx486DRx2 33/66GP (UMC+Cx487)
5034.00
i486 DX33 (UMC PCI)
4425.00
Cx486DLC 33GP (ETEQ+387-40)
2698.00
Nx586 P90 (NxVLB)
1706.00
i386 DX25-IV (OPTi+387-40)
1451.00
Cx486DRx2 33/66GP (UMC)
706.00
i486 SX2/50 (UMC PCI)
632.00
Am386 DX33 (ETEQ+387-40)
567.00
i486 SX33 (UMC PCI)
424.00
V 20 (TurboXT+8087)
398.00
Cx486DLC 33GP (ETEQ)
357.00
V 20 (?+8087)
333.00
8088 -1-P (?+8087)
321.00
i486 SX25 (UMC PCI)
320.00
Am386 DX40 (MX83)
307.00
i486 SX20 (UMC PCI)
256.00
Am386 DX33 (ETEQ)
251.00
Am386 SX40 (ALi M1217)
200.00
Am386 SX33 (ALi M1217)
164.00
i386 DX25-IV (OPTi)
163.00
i386 SX25 (WDC ISA)
137.00
NG80386SX -20 (F82C836 16k)
136.00
NG80386SX -20 (OPTi82C/0WS)
117.00
CS80C286 -20 (Hedaka/1WS)
107.00
NG80386SX -16 (?)
92.00
80286 -12-N (Suntac ST62C/0WS)
80.00
R80286 8 (?)
43.00
CG80286 6 (IBM 512k)
32.00
V 30 (IBM 8530)
29.00
V 20 (TurboXT)
27.00
V 20 (?)
22.00
8086 -2 (IBM 8530)
18.00
8088 -1-P (?)
16.00
8088 D (?)
8.00
CPU (chipset) Landmark 6 score
Am386 DX40 (MX83)
69.00
i386 DX25-IV (OPTi)
36.00
i386 SX25 (WDC ISA)
34.00
NG80386SX -20 (F82C836 16k)
30.00
CS80C286 -20 (Hedaka/1WS)
27.00
NG80386SX -20 (OPTi82C/0WS)
27.00
80286 -12-N (Suntac ST62C/0WS)
18.00
V 30 (IBM 8530)
7.47
8086 -2 (IBM 8530)
5.29
8088 -1-P (?)
5.09
8088 D (?)
2.44
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