PC wieder gametauglich machen

Hallo Leute,
ich habe mir jetzt GTA 5 besorgt. Leider musste ich die Grafik um einiges runterdrehen. Hättet ihr ein paar Tipps wie ich meinen PC aufrüsten könnte?
hier meine Hardware via Speccy -
zhalt es sich aus aufzurüsten oder wäre es besser/günstiger gleich ein neues system zusammenzustellen

Summary
Operating System
Windows 7 Professional 64-bit SP1
CPU
AMD Athlon II X4 64036 °C
Propus 45nm Technology
RAM
12,0GB Dual-Channel DDR3 @ 668MHz (9-9-9-24)
Motherboard
MICRO-STAR INTERNATIONAL CO.,LTD 770-C45 (MS-7599) (CPU 1)48 °C
Graphics
TOSHIBA-TV (1920x1080@60Hz)
MD20436 (1920x1080@60Hz)
1024MB ATI Radeon HD 5700 Series (Undefined)49 °C
Storage
931GB Hitachi HDS721010CLA332 ATA Device (SATA)32 °C
1863GB Western Digital WDC WD20EARS-00MVWB0 ATA Device (SATA)32 °C
1863GB Seagate ST2000DX001-1CM164 ATA Device (SATA)32 °C
29GB Generic USB SD Reader USB Device (USB)
Optical Drives
VKFMDI R0DQ3KPMN SCSI CdRom Device
HL-DT-ST BD-RE BH16NS40 ATA Device
Audio
AMD High Definition Audio Device
Operating System
Windows 7 Professional 64-bit SP1
Computer type: Desktop


CPU
AMD Athlon II X4 640
Cores4
Threads4
NameAMD Athlon II X4 640
Code NamePropus
PackageSocket AM3 (938)
Technology45nm
SpecificationAMD Athlon II X4 640 Processor
FamilyF
Extended Family10
Model5
Extended Model5
Stepping3
RevisionBL-C3
InstructionsMMX (+), 3DNow! (+), SSE, SSE2, SSE3, SSE4A, AMD 64, NX, VMX
VirtualizationSupported, Disabled
HyperthreadingNot supported
Fan Speed3211 RPM
Bus Speed200,5 MHz
Rated Bus Speed2004,9 MHz
Stock Core Speed3000 MHz
Stock Bus Speed200 MHz
Average Temperature36 °C
Caches
L1 Data Cache Size4 x 64 KBytes
L1 Instructions Cache Size4 x 64 KBytes
L2 Unified Cache Size4 x 512 KBytes
Cores
Core 0
Core Speed3007,4 MHz
Multiplierx 15,0
Bus Speed200,5 MHz
Rated Bus Speed2004,9 MHz
Temperature37 °C
ThreadsAPIC ID: 0
Core 1
Core Speed3007,4 MHz
Multiplierx 15,0
Bus Speed200,5 MHz
Rated Bus Speed2004,9 MHz
Temperature37 °C
ThreadsAPIC ID: 1
Core 2
Core Speed3007,4 MHz
Multiplierx 15,0
Bus Speed200,5 MHz
Rated Bus Speed2004,9 MHz
Temperature36 °C
ThreadsAPIC ID: 2
Core 3
Core Speed3007,4 MHz
Multiplierx 15,0
Bus Speed200,5 MHz
Rated Bus Speed2004,9 MHz
Temperature37 °C
ThreadsAPIC ID: 3
RAM
Memory slots
Total memory slots4
Used memory slots4
Free memory slots0
Memory
TypeDDR3
Size12288 MBytes


SPD
Number Of SPD Modules4
Slot #1
TypeDDR3
Size4096 MBytes
ManufacturerCorsair
Max BandwidthPC3-10700H (667 MHz)
Part NumberCMX8GX3M2A1333C9
SPD Ext.XMP

Slot #2
TypeDDR3
Size4096 MBytes
ManufacturerCorsair
Max BandwidthPC3-10700H (667 MHz)
Part NumberCMX8GX3M2A1333C9
SPD Ext.XMP

Slot #3
TypeDDR3
Size2048 MBytes
ManufacturerTeam Group Inc.
Max BandwidthPC3-10700 (667 MHz)
Part NumberTeam--Elite-1333
Week/year25 / 10

Slot #4
TypeDDR3
Size2048 MBytes
ManufacturerTeam Group Inc.
Max BandwidthPC3-10700 (667 MHz)
Part NumberTeam--Elite-1333
Week/year25 / 10

Motherboard
ManufacturerMICRO-STAR INTERNATIONAL CO.,LTD
Model770-C45 (MS-7599) (CPU 1)
Version1.0
Chipset VendorAMD
Chipset Model770
Chipset Revision00
Southbridge VendorAMD
Southbridge ModelSB700
Southbridge Revision00
System Temperature48 °C
BIOS
BrandAmerican Megatrends Inc.
VersionV1.9
Date18.05.2010
Voltage
+3.3V3,248 V
CPU CORE1,384 V
VIN22,224 V
VIN31,270 V
+5V3,027 V
+12V4,400 V
VIN60,592 V
VSB3V3,280 V
CMOS BATTERY3,200 V

Graphics

ATI Radeon HD 5700 Series
ManufacturerATI
ModelRadeon HD 5700 Series
GPUJuniper
Device ID1002-68B8
SubvendorUndefined (0000)
Current Performance LevelLevel 0
Voltage0,950 V
Technology40 nm
Die Size166 mm²
Release DateOct 13, 2009
DirectX Support11.0
DirectX Shader Model5.0
OpenGL Support4.1
GPU Clock850,0 MHz
Temperature49 °C
Core Voltage0.950 V
Bios Core Clock850,00
Bios Mem Clock1200,00
Driver version12.104.0.0
BIOS Version113-XXXXXXX-XXX
ROPs16
Shaders800 unified
Memory TypeHyperMemory
Memory1024 MB
Bus Width64x2 (128 bit)
Pixel Fillrate13,6 GPixels/s
Noise LevelModerate
Max Power Draw108 Watts
Count of performance levels : 3
Level 1 - "Perf Level 0"
GPU Clock157 MHz
Memory Clock300 MHz
Level 2 - "Perf Level 1"
GPU Clock600 MHz
Memory Clock1200 MHz
Level 3 - "Perf Level 2"
GPU Clock850 MHz
Memory Clock1200 MHz



Generated with Speccy v1.28.709