AMD Athlon 64 3800+ (rev. CG, AW) vs Intel Core i7-875K

Mini Review

AMD Athlon 64 3800+ (rev. CG, AW) advantages



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  • 3DNow! technology is supported by this processor. While the 3DNow! instructions may enhance performance of some old games, they are now obsolete, and they are not utilized by modern programs.
  • The microprocessor is 6% more energy efficient.

Intel Core i7-875K advantages



Intel Core i7-875K
  • The Intel Core i7-875K includes many more processing cores than the 3800+. Large number of cores helps this microprocessor to handle multiple processes or heavily multi-threaded tasks.
  • The Core i7-875K CPU features Hyper-Threading technology, which doubles the number of threads that the processor can execute at once.
  • Operating frequency of the microprocessor is higher than the frequency of the AMD Athlon 64 3800+ CPU.
  • Incorporated Virtualization feature improves performance in virtualization programs.
  • The microprocessor supports SSE3, SSSE3, SSE4.1 and SSE4.2 instructions.
  • The clock multiplier on the Intel Core i7-875K CPU is not locked. Therefore, the microprocessor can be freely overclocked on most motherboards to get greater performance. Be aware that overclocking can void CPU warranty.

3800+ vs i7-875K specifications comparison

The charts below compare the most important characteristics of the Intel Core i7-875K and Athlon 64 3800+ microprocessors. These features, together with an IPC (instructions per cycle) number, determine how well a processor performs. The "Number of cores / threads" graph displays the number of cores (darker area). Lighter area on the graph corresponds to the number of additional threads, provided by Hyper-Threading technology. The "Operating frequency" chart uses dark color for base frequency, whereas lighter area is for extra frequency, provided by Turbo feature. Darker area on the "On-chip cache" graph is for the On-chip L2 cache. Lighter area is for the L3 cache cache. Although the L3 cache cache is usually larger than the On-chip L2 cache, it is always slower.

The number of cores / threads
9
7.2
5.4
3.6
1.8
0
 
 
1
 
8
 
 
Higher is better
Operating frequency
4
3.2
2.4
1.6
0.8
0
 
 
2.4GHz
 
3.6GHz
 
 
Higher is better
On-chip L2 + L3 cache
11000
8800
6600
4400
2200
0
 
 
512KB
 
9216KB
 
 
Higher is better
Thermal Design Power
110
88
66
44
22
0
 
 
89W
 
95W
 
 
Lower is better

  - AMD Athlon 64 3800+ (rev. CG, AW)       - Intel Core i7-875K

Detailed side by side comparison of AMD 3800+ vs Intel i7-875K specs can be found in the "Specifications" tab. Much more detailed comparison of low level features of both CPUs is located in the "CPUIDs" tab.


Pros and Cons summary

Athlon 64 3800+ (rev. CG, AW) Core i7-875K
General recommendations:
Insignificantly lower power consumption
  General recommendations:
More cores improve multi-threading performance,
Executes many more threads at once,
Base frequency is higher,
Features SSE3 / SSE4.1 / SSE4.2 instructions,
Can be easily overclocked

Drawbacks:

Smaller number of CPU cores,
Handles fewer threads,
Has lower base frequency,
Does not support some instructions
 

Drawbacks:

Needs slightly more power

Similar processors

Jump to:
  • CPUIDs
 

Compare AMD Athlon 64 3800+ (rev. CG, AW) with...

Other Core i7 CPU:

Any CPU:


Compare Intel Core i7-875K with...

Other Athlon 64 CPU:

Any CPU:


Note: To see differences with any CPU, type in any combination of the following into the "Any CPU" field: manufacturer name, full or partial family name, model number, part number, core name, socket name, operating frequency, bus speed (must have FSB suffix), and the last level cache. Here are some valid searches:

  i5-3570K
  Intel Celeron 2 GHz
  Ivy Bridge
  Pentium 4 800FSB
  AMD 3.3GHz 8MB

Specifications

Please visit AMD Athlon 64 3800+ (rev. CG, AW) and Intel Core i7-875K pages for more complete specifications of both microprocessors.

 AMD Athlon 64 3800+ (rev. CG, AW)Intel Core i7-875K
Market segmentDesktop
ManufacturerAMDIntel
FamilyAthlon 64Core i7
Basic details
Model number3800+i7-875K
CPU part numberADA3800DEP4AWBV80605001905AM
Box part numberADA3800AWBOXBX80605I7875K
Introduction dateJune 1, 2004June 1, 2010
 
CPU features
Core nameNewCastleLynnfield
MicroarchitectureK8Nehalem
Technology (micron)0.130.045
Data width (bits)64
SocketSocket 939Socket 1156
Frequency (MHz)24002933
Turbo Frequency (MHz) 3600 / 3467 / 3200 / 3200
Clock Multiplier1222
L1 cache64 KB (code) / 64 KB (data)128 KB (code) / 128 KB (data)
L2 cache (KB)5121024
L3 cache (KB) 8192
Max temperature (°C)70 
TDP (Watt)8995
Core voltage (V)1.5 
Cores14
Threads18
Multiprocessing1
 
Instruction set extensions
3DNow!+-
AMD64 / EM64T 64-bit technology+
MMX+
SSE+
SSE2+
SSE3-+
SSE4.1-+
SSE4.2-+
SSSE3 / Supplemental SSE3-+
 
Supported technologies
Hyper-Threading-+
PowerNow! / Enhanced SpeedStep+
Turbo Core / Turbo Boost-+
Unlocked multiplier-+
Virtualization-+
Virus Protection / Execute Disable bit+
 
Integrated Graphics
GPU TypeNone
Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "AMD Athlon 64 3800+ (rev. CG, AW)" or "Intel Core i7-875K" parts please click on the links in the table header.

CPUIDs

The table below compares two random CPUID records for AMD Athlon 64 3800+ (rev. CG, AW) and Intel Core i7-875K microprocessors, that were submitted to our CPUID database. Please note that different steppings of Intel processors, identified by S-spec numbers or CPUID, may have slightly different features. For that reason the comparison table below only applies to CPUs with specific S-Spec number / CPUID.

  CPUID 1 CPUID 2
ManufacturerAMDIntel
CPU FamilyAthlon 64Core i7
Model / Processor Number3800+i7-875K
Frequency 2942 MHz
CWID version0.20.4
Part numberADA3800DEP4AWBV80605001905AM
S-Spec / Stepping CodeCBAXC 0434MPMWSLBS2
CommentNewcastle FF0 DH7-CG 
 
General information
VendorAuthenticAMDGenuineIntel
Processor name (BIOS)AMD Athlon(tm) 64 Processor 3800+Intel(R) Core(TM) i7 CPU K 875 @ 2.93GHz
Cores14
Logical processorsOriginal OEM Processor8
Processor typeDH-CGOriginal OEM Processor
CPUID signatureFF0106E5
Family15 (0Fh) 6 (06h)
Model15 (0Fh)30 (01Eh)
Stepping 0 (00h) 5 (05h)
TLB/Cache details 64-byte Prefetching
Data TLB0: 2-MB or 4-MB pages, 4-way set associative, 32 entries
Data TLB: 4-KB Pages, 4-way set associative, 64 entries
Instruction TLB: 2-MB or 4-MB pages, fully associative, 7 entries
Instruction TLB: 4-KB pages, 4-way set associative, 64 entries
Shared 2nd-level TLB: 4 KB pages, 4-way set associative, 512 entries
 
Cache
L1 data: Associativity2-way set associative8-way set associative
L1 data: Comments Direct-mapped
L1 data: Line size64 bytes
L1 data: Lines per tag1 
L1 data: Size64 KB4 x 32 KB
L1 instruction: Associativity2-way set associative4-way set associative
L1 instruction: Comments Direct-mapped
L1 instruction: Line size64 bytes
L1 instruction: Lines per tag1 
L1 instruction: Size64 KB4 x 32 KB
L2: Associativity16-way set associative8-way set associative
L2: Comments Non-inclusive|Direct-mapped
L2: Line size64 bytes
L2: Lines per tag1 
L2: Size512 KB4 x 256 KB
L3: Associativity 16-way set associative
L3: Comments Inclusive|Direct-mapped|Shared between all cores
L3: Line size 64 bytes
L3: Size 8 MB
 
Instruction set extensions
3DNow!+-
AMD extensions to MMX+-
Extensions to 3DNow!+-
MMX+
SSE+
SSE2+
SSE3-+
SSE4.1-+
SSE4.2-+
SSSE3-+
 
Additional instructions
CLFLUSH+
CMOV+
CMPXCHG16B-+
CMPXCHG8B+
FXSAVE/FXRSTORE+
MONITOR/MWAIT-+
POPCNT-+
RDTSCP-+
SYSCALL/SYSRET+-
SYSENTER/SYSEXIT+
 
Major features
64-bit / Intel 64+
Enhanced SpeedStep-+
Hyper-Threading Technology-+
Intel Trusted Execution technology-+
Intel Virtualization-+
NX bit/XD-bit+
On-chip Floating Point Unit+
PowerNow! / Cool'n'Quiet+-
Turbo Boost-+
 
Other features
36-bit page-size extensions+
64-bit debug store-+
Advanced programmable interrupt controller+
CPL qualified debug store-+
Debug store-+
Debugging extensions+
Digital Thermal Sensor capability-+
Frequency ID control+-
LAHF / SAHF support in 64-bit mode-+
Machine check architecture+
Machine check exception+
Memory-type range registers+
Model-specific registers+
Page attribute table+
Page global extension+
Page-size extensions (4MB pages)+
Pending break enable-+
Perfmon and Debug capability-+
Physical address extensions+
Self-snoop-+
THERMTRIP+-
TSC rate is ensured to be invariant across all states-+
Temperature sensor+-
Thermal monitor-+
Thermal monitor 2-+
Thermal monitor and software controlled clock facilities-+
Time stamp counter+
Virtual 8086-mode enhancements+
Voltage ID control+-
xTPR Update Control-+
+ - feature is supported
- - feature is not supported
Features, not supported by all processors in the table, are not displayed

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