Intel Core i3-2120 vs Pentium G645
Mini Review
Intel Core i3-2120 advantages
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Intel Pentium G645 advantages
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i3-2120 vs G645 performance comparison
The charts illustrate relative performance of Core i3-2120 and Pentium G645 CPUs in several different kinds of applications. The numbers for 'Single-threaded performance', 'Multi-threaded performance' and 'Integrated Graphics performance' charts are calculated as an average of several related benchmarks, that you can see in the "Benchmarks" tab. As a result, performance in individual benchmarks may be lower or higher than what you see in the charts below. We also averaged the results for task type specific benchmarks and all-around performance benchmarks, and displayed them in the 'Overall performance' chart. The 'Price-performance ratio' chart shows how much more performance you will get per dollar spent. The cost of other system parts is not included in this chart. | |||||||||||||||||||||||||||||
Higher is better |
Higher is better |
Higher is better |
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Higher is better |
Higher is better |
Higher is better |
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Full list of benchmarks, that demonstrate performance difference between Intel i3-2120 and Pentium G645 in various types of programs, can be found in the "Benchmarks" tab.
i3-2120 vs G645 power consumption and price comparison
Lower is better |
Lower is better |
Detailed side by side comparison of Core i3-2120 vs Pentium G645 specs can be found in the "Specifications" tab. Much more detailed comparison of low level features of both processors you will find in the "CPUIDs" tab.
Pros and Cons summary
| Core i3-2120 | Pentium G645 |
|
General recommendations: Performs faster in all application types,
Features AVX instructions |
General recommendations: Insignificantly higher performance in graphics tasks,
Less expensive, Much better price / performance ratio |
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Drawbacks: Performs a bit worse in games and graphics tasks,
Significantly more expensive, Considerably worse price / performance ratio |
Drawbacks: Somewhat slow,
Lacks some instructions |
Similar processors
| Core i3-2120 | Pentium G645 |
Similar CPUs use the same socket and architecture as i3-2120 and Intel G645, but their performance and other characteristics are a bit different.
Specifications
| Intel Core i3-2120 | Intel Pentium G645 | |
| Basic details | ||
| Market segment | Desktop | |
|---|---|---|
| Manufacturer | Intel | |
| Family | Intel Core i3 | Intel Pentium Dual-Core |
| Model number | i3-2120 | G645 |
| CPU part number | CM8062301044204 | CM8062301262601 |
| Box part number | BX80623I32120 BXC80623I32120 | BX80623G645 BXC80623G645 |
| Introduction date | February 20, 2011 | September 2, 2012 |
| Current official price | $117 (as of Jan 2013) | $64 (as of Jan 2013) |
| CPU features | ||
| Core name | Sandy Bridge | |
| Microarchitecture | Sandy Bridge | |
| Technology (micron) | 0.032 | |
| Data width (bits) | 64 | |
| Socket | Socket 1155 | |
| Frequency (MHz) | 3300 | 2900 |
| Clock Multiplier | 33 | 29 |
| L1 cache | 64 KB (code) / 64 KB (data) | |
| L2 cache (KB) | 512 | |
| L3 cache (KB) | 3072 | |
| Max temperature (°C) | 69.1 | |
| TDP (Watt) | 65 | |
| Cores | 2 | |
| Threads | 4 | 2 |
| Multiprocessing | 1 | |
| Instruction set extensions | ||
| AMD64 / EM64T 64-bit technology | + | |
| AVX / Advanced Vector Extensions | + | - |
| MMX | + | |
| SSE | + | |
| SSE2 | + | |
| SSE3 | + | |
| SSE4.1 | + | |
| SSE4.2 | + | |
| SSSE3 / Supplemental SSE3 | + | |
| Supported technologies | ||
| Hyper-Threading | + | - |
| PowerNow! / Enhanced SpeedStep | + | |
| Virtualization | + | |
| Virus Protection / Execute Disable bit | + | |
| Integrated Graphics | ||
| GPU Type | HD 2000 | HD (Sandy Bridge) |
| Base frequency (MHz) | 850 | |
| Maximum frequency (MHz) | 1100 | |
| Integrated Memory Controller(s) | ||
| The number of controllers | 1 | |
| Memory channels | 2 | |
| Supported memory | DDR3-1066 DDR3-1333 | DDR3-1066 |
Rows with different specifications or features are highlighted.
For detailed specifications of "Intel Core i3-2120" or "Intel Pentium G645" parts please click on the links in the table header.
Benchmarks
System setup
Below is a partial set of Intel Core i3-2120 and Pentium G645 benchmarks from our CPU benchmark database. Both microprocessors were tested on ASUS P8H61-M motherboard with 2 GB dual-channel Corsair CM3X1024-1333C9 DDR3 memory, and Integrated on-chip Intel Sandy Bridge graphics. For different system configurations please see tests of Core i3-2120 and Pentium G645 CPUs in our benchmark database.
All tests were performed at default frequency and voltage, using manufacturer's stock fan/heatsink. None of the components were overclocked. Motherboard BIOS options were left at default settings.
The results of all benchmarks are broken into four categories: multi-threaded, single-threaded, memory intensive and graphics / gaming.
Core i3-2120 vs Pentium G645 single-threaded benchmarks
Single-threaded benchmarks run on a single CPU core, and do not depend on such features as the number of cores, or Hyper-Threading technology. Additionally, they do not utilize on-chip caches, dedicated to other cores.
Intel Core i3-2120 Intel Pentium G645 | ||
3DMark03 CPU score benchmark | ||
Longer is better  | ||
|---|---|---|
| 100% | ||
| 97.4% | ||
CINEBENCH R10 CPU score (1 core) benchmark | ||
| Longer is better | ||
| 100% | ||
| 88.5% | ||
FLAC encoding - single process benchmark | ||
| Longer is better | ||
| 100% | ||
| 87.8% | ||
H.264 video encoding - single process benchmark | ||
| Longer is better | ||
| 100% | ||
| 88.3% | ||
LAME MP3 encoding - single process benchmark | ||
| Longer is better | ||
| 100% | ||
| 87.9% | ||
Intel Core i3-2120 Intel Pentium G645 | ||
PCMark2002 CPU score benchmark | ||
| Longer is better | ||
| 100% | ||
| 88.4% | ||
Super PI (1M) benchmark | ||
 Shorter is better | ||
| 100% | ||
| 88.5% | ||
XVid video encoding - single process benchmark | ||
| Longer is better | ||
| 100% | ||
| 88.6% | ||
Core i3-2120 vs Pentium G645 multi-threaded benchmarks
Multi-threaded benchmarks utilize all CPU cores and other on-chip resources (on-chip caches, internal buffers, etc). Intel's Hyper-Threading feature also helps to improve multi-threading performance.
Intel Core i3-2120 Intel Pentium G645 | ||
3DMark06 CPU score benchmark | ||
| Longer is better | ||
|---|---|---|
| 100% | ||
| 75.1% | ||
Apache web server - dynamic pages benchmark | ||
| Longer is better | ||
| 100% | ||
| 95.7% | ||
Apache web server - static pages benchmark | ||
| Longer is better | ||
| 100% | ||
| 63.0% | ||
Blowfish encryption benchmark | ||
| Longer is better | ||
| 100% | ||
| 77.7% | ||
CINEBENCH R10 CPU score benchmark | ||
| Longer is better | ||
| 100% | ||
| 76.3% | ||
Intel Core i3-2120 Intel Pentium G645 | ||
CINEBENCH R10 render time (seconds) benchmark | ||
| Shorter is better | ||
| 100% | ||
| 76.3% | ||
CrystalMark ALU benchmark | ||
| Longer is better | ||
| 100% | ||
| 66.1% | ||
CrystalMark FPU benchmark | ||
| Longer is better | ||
| 100% | ||
| 61.7% | ||
Euler3D benchmark | ||
| Longer is better | ||
| 100% | ||
| 84.5% | ||
FLAC encoding - multiple processes benchmark | ||
| Longer is better | ||
| 100% | ||
| 75.3% | ||
Intel Core i3-2120 Intel Pentium G645 | ||
Fritz Chess Benchmark benchmark | ||
| Longer is better | ||
| 100% | ||
| 68.7% | ||
H.264 video encoding - multiple processes benchmark | ||
| Longer is better | ||
| 100% | ||
| 71.7% | ||
H.264 video encoding - multithreaded benchmark | ||
| Longer is better | ||
| 100% | ||
| 70.9% | ||
LAME MP3 encoding - multiple processes benchmark | ||
| Longer is better | ||
| 100% | ||
| 67.8% | ||
PCMark05 CPU score benchmark | ||
| Longer is better | ||
| 100% | ||
| 81.2% | ||
Intel Core i3-2120 Intel Pentium G645 | ||
PCMark05 score benchmark | ||
| Longer is better | ||
| 100% | ||
| 92.1% | ||
Sandra Dhrystone (MIPS) benchmark | ||
| Longer is better | ||
| 100% | ||
| 78.5% | ||
Sandra MultiMedia Floating Point (it/s) benchmark | ||
| Longer is better | ||
| 100% | ||
| 54.7% | ||
Sandra MultiMedia Integer (it/s) benchmark | ||
| Longer is better | ||
| 100% | ||
| 74.2% | ||
Sandra Whetstone (MFLOPS) benchmark | ||
| Longer is better | ||
| 100% | ||
| 51.3% | ||
Intel Core i3-2120 Intel Pentium G645 | ||
Sandra Whetstone SSE2 (MFLOPS) benchmark | ||
| Longer is better | ||
| 100% | ||
| 50.0% | ||
XVid video encoding - multiple processes benchmark | ||
| Longer is better | ||
| 100% | ||
| 71.3% | ||
wPrime v1.55 (32M) benchmark | ||
| Shorter is better | ||
| 100% | ||
| 69.2% | ||
Core i3-2120 vs Pentium G645 graphics benchmarks
Graphics benchmarks depend on the type of integrated or discrete graphics adapter, and to less extent on the processor performance. Because these benchmarks are synthetic, they may not truly represent gaming performance. However, they still can used to estimate whether one processor will perform faster or slower in games than another CPU.
Intel Core i3-2120 Intel Pentium G645 | ||
3DMark03 game score benchmark | ||
| Longer is better | ||
|---|---|---|
| 100% | ||
| 99.5% | ||
3DMark06 3DMark score benchmark | ||
| Longer is better | ||
| 100% | ||
| 99.1% | ||
3DMark2001 score benchmark | ||
| Longer is better | ||
| 100% | ||
| 97.8% | ||
CINEBENCH R10 OpenGL score benchmark | ||
| Longer is better | ||
| 100% | ||
| 96.8% | ||
PCMark05 Graphics score benchmark | ||
| Longer is better | ||
| 100% | ||
| 97.6% | ||
Core i3-2120 vs Pentium G645 memory performance
Memory-intensive tests or programs move large amounts of data to/from memory, and they depend more on memory throughput and the size of on-chip caches, rather than on CPU integer/FP/SIMD performance.
Intel Core i3-2120 Intel Pentium G645 | ||
7Zip compressing/decompressing speed benchmark | ||
| Longer is better | ||
|---|---|---|
| 100% | ||
| 78.9% | ||
CrystalMark Memory benchmark | ||
| Longer is better | ||
| 100% | ||
| 93.2% | ||
PCMark05 Memory score benchmark | ||
| Longer is better | ||
| 100% | ||
| 67.8% | ||
PCMark2002 Memory score benchmark | ||
| Longer is better | ||
| 100% | ||
| 90.5% | ||
WinRAR compressing/decompressing speed benchmark | ||
| Longer is better | ||
| 100% | ||
| 64.7% | ||
CPUIDs
The table below compares two random CPUID records for Intel Core i3-2120 and Intel Pentium G645 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 | |
| Manufacturer | Intel | |
|---|---|---|
| CPU Family | Core i3 | Pentium Dual-Core |
| Model / Processor Number | i3-2120 | G645 |
| Frequency | 3310 MHz | 2909 MHz |
| CWID version | 0.4 | 0.5 |
| Part number | CM8062301044204 | CM8062301262601 |
| S-Spec / Stepping Code | SR05Y | SR0RS |
| General information | ||
| Vendor | GenuineIntel | |
| Processor name (BIOS) | Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz | Intel(R) Pentium(R) CPU G645 @ 2.90GHz |
| Cores | 2 | |
| Logical processors | 4 | 2 |
| Processor type | Original OEM Processor | |
| CPUID signature | 206A7 | |
| Family | 6 (06h) | |
| Model | 42 (02Ah) | |
| Stepping | 7 (07h) | |
| TLB/Cache details | 64-byte Prefetching Data TLB0: 2-MB or 4-MB pages, 4-way associative, 32 entries Data TLB: 4-KB Pages, 4-way set associative, 64 entries Instruction TLB: 4-KB pages, 4-way set associative, 64 entries L2 TLB: 1-MB, 4-way set associative, 64-byte line size Shared 2nd-level TLB: 4 KB pages, 4-way set associative, 512 entries | 64-byte Prefetching Data TLB0: 2-MB or 4-MB pages, 4-way associative, 32 entries Data TLB: 4-KB Pages, 4-way set associative, 64 entries Instruction TLB: 4-KB Pages, 4-way set associative, 128 entries L2 TLB: 1-MB, 4-way set associative, 64-byte line size Shared 2nd-level TLB: 4 KB pages, 4-way set associative, 512 entries |
| Cache | ||
| L1 data: Associativity | 8-way set associative | |
| L1 data: Comments | Direct-mapped | |
| L1 data: Line size | 64 bytes | |
| L1 data: Size | 2 x 32 KB | |
| L1 instruction: Associativity | 8-way set associative | |
| L1 instruction: Comments | Direct-mapped | |
| L1 instruction: Line size | 64 bytes | |
| L1 instruction: Size | 2 x 32 KB | |
| L2: Associativity | 8-way set associative | |
| L2: Comments | Non-inclusive|Direct-mapped | |
| L2: Line size | 64 bytes | |
| L2: Size | 2 x 256 KB | |
| L3: Associativity | 12-way set associative | |
| L3: Comments | Inclusive|Shared between all cores | |
| L3: Line size | 64 bytes | |
| L3: Size | 3 MB | |
| Instruction set extensions | ||
| AVX | + | - |
| MMX | + | |
| SSE | + | |
| SSE2 | + | |
| SSE3 | + | |
| SSE4.1 | + | |
| SSE4.2 | + | |
| SSSE3 | + | |
| Additional instructions | ||
| CLFLUSH | + | |
| CMOV | + | |
| CMPXCHG16B | + | |
| CMPXCHG8B | + | |
| FXSAVE/FXRSTORE | + | |
| MONITOR/MWAIT | + | |
| PCLMULDQ | + | |
| POPCNT | + | |
| RDTSCP | + | |
| SYSENTER/SYSEXIT | + | |
| XSAVE / XRESTORE states | + | |
| Major features | ||
| 64-bit / Intel 64 | + | |
| Enhanced SpeedStep | + | |
| Hyper-Threading Technology | + | - |
| Intel Virtualization | + | |
| NX bit/XD-bit | + | |
| On-chip Floating Point Unit | + | |
| 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 | + | |
| 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 | + | |
| Power Limit Notification capability | + | |
| Process context identifiers | + | |
| Self-snoop | + | |
| TSC rate is ensured to be invariant across all states | + | |
| Thermal monitor | + | |
| Thermal monitor 2 | + | |
| Thermal monitor and software controlled clock facilities | + | |
| Time stamp counter | + | |
| Timestamp counter deadline | + | |
| Virtual 8086-mode enhancements | + | |
| xTPR Update Control | + | |
- - feature is not supported
Features, not supported by all processors in the table, are not displayed
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