![]() |
![]() |
![]() |
AMD Phenom II X4 840 | AMD A10-7850K | |
CPU comparisonIn this CPU comparison, we compare the AMD Phenom II X4 840 and the AMD A10-7850K and use benchmarks to check which processor is faster.
We compare the AMD Phenom II X4 840 4 core processor released in Q1/2011 with the AMD A10-7850K which has 4 CPU cores and was introduced in Q1/2014. |
||
AMD Phenom II (52) | Family | AMD A (112) |
AMD Phenom II - 840/850 (2) | CPU group | AMD A10-7000 (7) |
5 | Generation | 4 |
Propus | Architecture | Kaveri (Steamroller) |
Desktop / Server | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | -- |
|
||
CPU Cores and Base FrequencyThe AMD Phenom II X4 840 is a 4 core processor with a clock frequency of 3.20 GHz. The processor can compute 4 threads at the same time. The AMD A10-7850K clocks with 3.70 GHz (4.00 GHz), has 4 CPU cores and can calculate 4 threads in parallel. |
||
AMD Phenom II X4 840 | Characteristic | AMD A10-7850K |
4 | Cores | 4 |
4 | Threads | 4 |
normal | Core architecture | normal |
No | Hyperthreading | No |
Yes | Overclocking ? | Yes |
3.20 GHz | Frequency | 3.70 GHz |
-- | Turbo Frequency (1 Core) | 4.00 GHz |
-- | Turbo Frequency (All Cores) | 4.00 GHz |
Internal GraphicsGraphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback. |
||
no iGPU | GPU | AMD Radeon R7 - 512 (Kaveri) |
GPU frequency | 0.72 GHz | |
-- | GPU (Turbo) | -- |
-- | GPU Generation | 6 |
Technology | 28 nm | |
Max. displays | 2 | |
-- | Compute units | 8 |
-- | Shader | 512 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
-- | Max. GPU Memory | 2 GB |
-- | DirectX Version | 12 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
||
no iGPU | GPU | AMD Radeon R7 - 512 (Kaveri) |
No | Codec h265 / HEVC (8 bit) | No |
No | Codec h265 / HEVC (10 bit) | No |
No | Codec h264 | Decode |
No | Codec VP9 | No |
No | Codec VP8 | No |
No | Codec AV1 | No |
No | Codec AVC | Decode |
No | Codec VC-1 | Decode |
No | Codec JPEG | Decode / Encode |
Memory & PCIeUp to GB of memory in a maximum of 2 memory channels is supported by the AMD Phenom II X4 840, while the AMD A10-7850K supports a maximum of GB of memory with a maximum memory bandwidth of 34.2 GB/s enabled. |
||
AMD Phenom II X4 840 | Characteristic | AMD A10-7850K |
DDR3-1333, DDR2-1066 | Memory | DDR3-2133 |
Max. Memory | ||
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
21.3 GB/s | Max. Bandwidth | 34.2 GB/s |
No | ECC | Yes |
-- | L2 Cache | -- |
2.00 MB | L3 Cache | 4.00 MB |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 16 |
-- | PCIe Bandwidth | 15.8 GB/s |
Thermal ManagementThe AMD Phenom II X4 840 has a TDP of 95 W. The TDP of the AMD A10-7850K is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
||
AMD Phenom II X4 840 | Characteristic | AMD A10-7850K |
95 W | TDP (PL1 / PBP) | 95 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X4 840 has 2.00 MB cache and is manufactured in 45 nm. The cache of AMD A10-7850K is at 4.00 MB. The processor is manufactured in 28 nm. |
||
AMD Phenom II X4 840 | Characteristic | AMD A10-7850K |
45 nm | Technology | 28 nm |
Unknown | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE3, SSE4a | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 |
AM3 | Socket | FM2+ |
AMD-V | Virtualization | AMD-V |
No | AES-NI | Yes |
Windows 10, Linux | Operating systems | |
Q1/2011 | Release date | Q1/2014 |
-- | Release price | 125 $ |
show more data | show more data | |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 4.00 GHz |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 4.00 GHz |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 4.00 GHz |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 4.00 GHz |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 4.00 GHz |
![]() |
AMD Phenom II X4 840
@ 0.00 GHz |
||
![]() |
AMD A10-7850K
AMD Radeon R7 - 512 (Kaveri) @ 0.72 GHz |
![]() |
AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
||
![]() |
AMD A10-7850K
4C 4T @ 3.70 GHz |
Devices using this processor |
|
AMD Phenom II X4 840 | AMD A10-7850K |
Unknown | Unknown |