Cyrix 6x86MX-PR266 (83MHz 2.7V)


Specifications

General information
TypeCPU / Microprocessor
FamilyCyrix 6x86
CPU part number6x86MX-PR266 (83MHz 2.7V) is an OEM/tray microprocessor
Frequency (MHz)  ? 208 (rated 266)
Bus speed (MHz)  ? 83
Clock multiplier  ? 2.5
Package296-pin Staggered Ceramic Pin Grid Array
1.952" x 1.952" (4.96 cm x 4.96 cm)
Introduction date19-Mar-98
Price at introduction$180
 
Architecture / Microarchitecture
Manufacturing process0.35 micron 5-layer metal CMOS
Data width32 bit
Floating Point UnitIntegrated
Level 1 cache size  ? 256 bytes primary code cache
64 KB 4-way set associative unified data/code write-back cache
Physical memory (GB)4
FeaturesMMX technology
 
Electrical/Thermal parameters
V core (V)  ? 2.7
Min/Recommended/Max V I/O or secondary (V)3.135 / 3.3 / 3.465
Minimum/Maximum operating temperature (°C)  ? 0 - 70

Pictures (1)

Cyrix 6x86MX-PR266 (83MHz 2.7V)

207 MHz (266 MHz rating, 83 MHz bus)
296-pin staggered ceramic PGA
Cyrix 6x86MX-PR266 (83MHz 2.7V)

Benchmarks

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Tested processor
CPU ID:0600h
CPU vendor string:CyrixInstead

Integer performance

Part number   Result
Rise Technology MP6 200MHz MP6440DPF-ES (2.7V 2X100 MHZ)  ? 
111.9%
Rise Technology MP6 200MHz MP6441DPFH4-Q  ? 
111.7%
AMD K6 233MHz AMD-K6/233APR  ? 
110.5%
Cyrix 6x86MX 166MHz 6X86MX-PR200 (66MHZ 2.9V)  ? 
106.3%
AMD K5 AMD-K5-PR166ABR  ? 
100.2%
Cyrix 6x86MX 208MHz 6X86MX-PR266 (83MHZ 2.7V)  ? 
100%
IBM 6x86MX 6X86MX-266GP (2.9V 83MHZ 2.5X) (SAMPLE)  ? 
99.8%
Cyrix 6x86MX 6X86MX-PR266 (83MHZ 2.9V) (ES)  ? 
98%
AMD K6 200MHz K6/200ALR  ? 
96%
Cyrix 6x86MX 150MHz 6X86MX-PR200 (75MHZ 2.9V)  ? 
95.7%
Rise Technology MP6 166MHz MP6440DPF-ES (2.7V 2X83 MHZ)  ? 
93%

Floating Point performance

Part number   Result
AMD K6 166MHz AMD-K6/PR166 (BLACK) (ES)  ? 
116.2%
Intel Pentium MMX 166MHz A80503166  ? 
110.8%
Intel Pentium 166MHz A80502166  ? 
109%
Intel Pentium 166MHz BP80502166  ? 
108.4%
Rise Technology MP6 166MHz MP6440DPF-ES (2.7V 2X83 MHZ)  ? 
104.2%
Cyrix 6x86MX 208MHz 6X86MX-PR266 (83MHZ 2.7V)  ? 
100%
IBM 6x86MX 6X86MX-266GP (2.9V 83MHZ 2.5X) (SAMPLE)  ? 
100%
Cyrix 6x86MX 6X86MX-PR266 (83MHZ 2.9V) (ES)  ? 
99.4%
Intel Pentium MMX overdrive PODPMT60X150  ? 
98.8%
Intel Pentium 150MHz A80502150  ? 
97%
Rise Technology MP6 150MHz MP6440DPF-ES (2.8V 2X75 MHZ)  ? 
93.4%
IBM 6x86MX 6X86MX-233GP (2.9V 75 MHZ)  ? 
89.8%

MMX / SSE / SSE2 performance

Part number   Result
AMD K6 166MHz AMD-K6/PR166 (BLACK) (ES)  ? 
117.9%
IBM 6x86MX 225MHz 6X86MX-300GP (2.9V 75 MHZ)  ? 
112.5%
AMD K5 AMD-K5-PR166ABX  ? 
107.8%
AMD K5 AMD-K5-PR166ABR  ? 
107.7%
Intel Pentium 166MHz A80502166  ? 
101.3%
Cyrix 6x86MX 208MHz 6X86MX-PR266 (83MHZ 2.7V)  ? 
100%
IBM 6x86MX 6X86MX-266GP (2.9V 83MHZ 2.5X) (SAMPLE)  ? 
99.5%
AMD K5 105MHz AMD-K5-PR150ABR  ? 
96.2%
AMD K5 100MHz AMD-K5-PR133ABQ  ? 
92.2%
Intel Pentium 150MHz A80502150  ? 
90.5%
Cyrix 6x86MX 188MHz 6X86MX-PR233 (75MHZ 2.9V)  ? 
90.4%

CPU ID

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