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Differences What are the advantages of each

Front view of Intel Core i7 4790

Reasons to consider the
Intel Core i7 4790

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Much higher clock speed 3.6 GHz vs 2.3 GHz More than 55% higher clock speed
Significantly higher turbo clock speed 4 GHz vs 2.8 GHz Around 45% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 68.25W vs 80.44W More than 15% lower typical power consumption
Slightly higher Maximum operating temperature 72.72 °C vs 69 °C More than 5% higher Maximum operating temperature
Lower annual home energy cost 20.24 $/year vs 23.85 $/year More than 15% lower annual home energy cost
Lower annual commercial energy cost 73.58 $/year vs 86.72 $/year More than 15% lower annual commercial energy cost
Newer May, 2014 vs Jan, 2014 Release date 3 months later
Front view of AMD Opteron 6338P

Reasons to consider the
AMD Opteron 6338P

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Much more l2 cache 12 MB vs 1 MB 12x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 12 vs 8 4 more threads

Features Key features of the Core i7 4790  vs Opteron 6338P 

clock speed

Core i7 4790
3.6 GHz
Opteron 6338P
2.3 GHz

turbo clock speed

Core i7 4790
4 GHz
Opteron 6338P
2.8 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Core i7 4790  vs
Opteron 6338P 
Clock speed 3.6 GHz 2.3 GHz
Turbo clock speed 4 GHz 2.8 GHz
Cores Quad core Dodeca core
Socket type
LGA 1150
G34
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
EM64T
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
AVX 2.0
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
Channels Dual Channel Quad Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 51,200 MB/s

details

Core i7 4790  vs
Opteron 6338P 
Architecture x86-64 x86-64
Threads 8 12
L2 cache 1 MB 12 MB
L3 cache 8 MB 16 MB
Manufacture process 22 nm 32 nm
Max CPUs 1 4
Clock multiplier 36 17
Operating temperature Unknown - 72.72°C Unknown - 69°C

integrated graphics

GPU GPU None
Label Intel® HD Graphics 4600 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,200 MHz N/A

power consumption

TDP 84W 99W
Annual home energy cost 20.24 $/year 23.85 $/year
Annual commercial energy cost 73.58 $/year 86.72 $/year
Typical power consumption 68.25W 80.44W

bus

Transfer rate 5,000 MT/s 6,400 MT/s
Intel Core i7 4790
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AMD Opteron 6338P
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