AMD 5k86 P75

An older version of the AMD K5. The normal AMD K5 processors have a different name and printing on the CPU. This one looks more like the AMD Am5x86 -P75 which is technically a 486; this isn't.

Basically AMD wanted to launch the AMD K5 but was struck with problems in the branch predictor. AMD decided to disable the brach predictor and sell the CPU as 5k86 P75 (with SSA/5 core). Later when AMD fixed the branch predictor they started selling K5-marked CPU's across the board. The P75 to P100 still had the branch predictor disabled. The faster models like the PR133 used the 5k86 core (and yes, the corename is identical to the productname of this CPU) with the brand predictor enabled.

Because the PR133 performed better with the branch predictor enabled, AMD sold the AMD K5 using a PR-number rather than clock-frequency to avoid people from comparing the PR133 with a Pentium 120 because the PR133 ran at 116MHz.

Specifications

Core / Codename
Clockfrequency
75MHz
Front Side Bus
50MHz
Multiplier
1,5x
vCore
3,52V
L1 cache
24KB
L2 cache
None
sSpec
25600
Chip date
9619
Stepping
?
Socket
Transistor count
4,3M
Condition
CPU only
Engineering sample?
No

Benchmarks

CPU (chipset) dhry1od (Dhrystone) score
CPU (chipset) Doom score
CPU (chipset) DOSBench score
CPU (chipset) MDK score
CPU (chipset) Quake score
CPU (chipset) whetcod (Whetstone) score
Post a comment or question as Anonymous user
Want your own account? Create one, it's free to register!
Insert reply
Your validation code is: 1337