CPU Information
HDX955FBK4DGI is a model 955 processor with locked clock multiplier. All other features of this processor are the same as on Phenom II X4 955 Black Edition CPU, and it's performance matches performance of non-overclocked 955 BE microprocessor. Currently (October 2009) the locked version of Phenom II 955 is available only as an OEM processor. The X955 will likely be released as a boxed processor with box part number HDX955FBGIBOX.
| General information |
| Type | CPU / Microprocessor |
| Family | AMD Phenom II X4 |
| Model number ? | 955 |
| CPU part number | HDX955FBK4DGI |
| Stepping code | AACYC AC |
| Frequency (MHz) ? | 3200 |
| Bus speed (MHz) ? | - 667 MHz Memory controller
- One 1800 MHz 16-bit HyperTransport link
|
| Package | 938-pin organic micro-PGA |
| Sockets | Socket AM2+
Socket AM3 |
| Weight | 1.4oz / 38.9g |
| |
| Architecture / Microarchitecture |
| Processor core | Deneb |
| Core stepping | C2 |
| Manufacturing process | 0.045 micron SOI
758 million transistors |
| Die size | 243 mm2 |
| Data width | 64 bit |
| Number of cores | 4 |
| Floating Point Unit | Integrated |
| Level 1 cache size ? | 4 x 64 KB 2-way associative instruction caches
4 x 64 KB 2-way associative data caches |
| Level 2 cache size ? | 4 x 512 KB 16-way associative caches |
| Level 3 cache size | 6 MB shared 48-way associative cache |
| Virtual memory (TB) | 256 |
| Features | - MMX
- 3DNow!
- SSE
- SSE2
- SSE3
- SSE4a ?
- Advanced Bit Manipulation ?
- AMD64 technology ?
- AMD-V (virtualization) technology
- Enhanced Virus Protection ?
|
| Low power features | - Cool'n'Quiet 3.0
- CoolCore Technology ?
- Dual Dynamic Power Management ?
- Core C1 and C1E states
- Package S0, S1, S3, S4 and S5 states
|
| On-chip peripherals | - Integrated 144-bit DDR2 Memory Controller
- HyperTransport 3 technology
|
| |
| Electrical/Thermal parameters |
| Thermal Design Power (W) ? | 125 |
CPU ID
NOTE: CPU ID information below was taken from one CPU and
may include features that are not present in all different steppings of the
AMD Phenom II X4 955 CPU.
| Manufacturer: | AMD |
| Family: | Phenom II X4 |
| Model / Processor Number: | 955 |
|
| Part number: | HDX955FBK4DGI |
| S-Spec / Comment: | AACYC AC0923EPMW |
| Submitted by: | CPU-World |
|
| General information |
|---|
| Vendor: | AuthenticAMD |
| Processor name (BIOS): | AMD Phenom(tm) II X4 955 Processor |
| Cores: | 4 |
| Logical processors: | 4 |
| Processor type: | Original OEM Processor |
| Core stepping: | RB-C2 |
| CPUID signature: | 100F42 |
| Family: | 16 (010h) |
| Model: | 4 (04h) |
| Stepping: | 2 (02h) |
| Cache: |
L2 |
L3 |
|---|
| Size: |
512 KB |
6 MB |
| Associativity: |
16-way set associative |
48-way set associative |
| Line size: |
64 bytes |
64 bytes |
| Lines per tag: |
1 |
1 |
| |
| Instruction set extensions | Additonal instructions |
|---|
| MMX |
Advanced Bit manipulation |
| AMD extensions to MMX |
CLFLUSH |
| 3DNow! |
CMOV |
| Extensions to 3DNow! |
CMPXCHG16B |
| SSE |
CMPXCHG8B |
| SSE2 |
FXSAVE/FXRSTORE |
| SSE3 |
MONITOR/MWAIT |
| SSE4A |
POPCNT |
| |
PREFETCH/PREFETCHW |
| |
SYSCALL/SYSRET |
| |
SYSENTER/SYSEXIT |
| |
| Major features | Other features |
|---|
| On-chip Floating Point Unit |
1 GB large page support |
| 64-bit / Intel 64 |
100MHz multiplier control |
| NX bit/XD-bit |
36-bit page-size extensions |
| Secure Virtual Machine (Virtualization) |
Advanced programmable interrupt controller |
| |
Core multi-processing legacy mode |
| |
Debugging extensions |
| |
Extended APIC space |
| |
Hardware P-state control |
| |
Hardware thermal control |
| |
Instruction based sampling |
| |
LAHF/SAHF support in 64-bit mode |
| |
LOCK MOV CR0 means MOV CR8 |
| |
Machine check architecture |
| |
Machine check exception |
| |
Memory-type range registers |
| |
Misaligned SSE mode |
| |
Model-specific registers |
| |
OS visible workaround |
| |
Page attribute table |
| |
Page global extension |
| |
Page-size extensions (4MB pages) |
| |
Physical address extensions |
| |
RDTSCP |
| |
SKINIT and STGI support |
| |
Software thermal control |
| |
THERMTRIP |
| |
TSC rate is ensured to be invariant across all states |
| |
Temperature sensor |
| |
Time stamp counter |
| |
Virtual 8086-mode enhancements |
| |
Watchdog timer support |
